Home / 21,303,941.80-31,955,912.70-13,226,038.60

Finding the Fourth Proportional to 21,303,941.80, 31,955,912.70 and 13,226,038.60

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Solution

The fourth proportional to 21,303,941.80, 31,955,912.70 and 13,226,038.60 is: 19,839,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303,941.80 : 31,955,912.70 = 13,226,038.60 : x
  2. Step 2: Convert to fraction form
    21,303,941.80/31,955,912.70 = 13,226,038.60/x
  3. Step 3: Cross multiply
    21,303,941.80x = 31,955,912.70 × 13,226,038.60
  4. Step 4: Simplify right side
    21,303,941.80x = 422,650,134,868,430.19
  5. Step 5: Solve for x
    x = 422,650,134,868,430.19/21,303,941.80
  6. Step 6: Final answer
    x = 19,839,057.90

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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.