Home / 20,745,889.98-28,642,248.60-13,206,268.34

Finding the Fourth Proportional to 20,745,889.98, 28,642,248.60 and 13,206,268.34

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Solution

The fourth proportional to 20,745,889.98, 28,642,248.60 and 13,206,268.34 is: 18,232,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745,889.98 : 28,642,248.60 = 13,206,268.34 : x
  2. Step 2: Convert to fraction form
    20,745,889.98/28,642,248.60 = 13,206,268.34/x
  3. Step 3: Cross multiply
    20,745,889.98x = 28,642,248.60 × 13,206,268.34
  4. Step 4: Simplify right side
    20,745,889.98x = 378,257,220,747,279.50
  5. Step 5: Solve for x
    x = 378,257,220,747,279.50/20,745,889.98
  6. Step 6: Final answer
    x = 18,232,875.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.