Home / 20,698,314,809.70-31,047,472,214.55-13,259,841,420.90

Finding the Fourth Proportional to 20,698,314,809.70, 31,047,472,214.55 and 13,259,841,420.90

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Solution

The fourth proportional to 20,698,314,809.70, 31,047,472,214.55 and 13,259,841,420.90 is: 19,889,762,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,314,809.70 : 31,047,472,214.55 = 13,259,841,420.90 : x
  2. Step 2: Convert to fraction form
    20,698,314,809.70/31,047,472,214.55 = 13,259,841,420.90/x
  3. Step 3: Cross multiply
    20,698,314,809.70x = 31,047,472,214.55 × 13,259,841,420.90
  4. Step 4: Simplify right side
    20,698,314,809.70x = 411,684,558,084,731,895,808
  5. Step 5: Solve for x
    x = 411,684,558,084,731,895,808/20,698,314,809.70
  6. Step 6: Final answer
    x = 19,889,762,131.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.