Home / 19,720,259.20-29,580,388.80-9,103,427.20

Finding the Fourth Proportional to 19,720,259.20, 29,580,388.80 and 9,103,427.20

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Solution

The fourth proportional to 19,720,259.20, 29,580,388.80 and 9,103,427.20 is: 13,655,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720,259.20 : 29,580,388.80 = 9,103,427.20 : x
  2. Step 2: Convert to fraction form
    19,720,259.20/29,580,388.80 = 9,103,427.20/x
  3. Step 3: Cross multiply
    19,720,259.20x = 29,580,388.80 × 9,103,427.20
  4. Step 4: Simplify right side
    19,720,259.20x = 269,282,915,988,495.34
  5. Step 5: Solve for x
    x = 269,282,915,988,495.34/19,720,259.20
  6. Step 6: Final answer
    x = 13,655,140.80

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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.