Home / 28,404,985.90-42,607,478.85-19,712,973.10

Finding the Fourth Proportional to 28,404,985.90, 42,607,478.85 and 19,712,973.10

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Solution

The fourth proportional to 28,404,985.90, 42,607,478.85 and 19,712,973.10 is: 29,569,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404,985.90 : 42,607,478.85 = 19,712,973.10 : x
  2. Step 2: Convert to fraction form
    28,404,985.90/42,607,478.85 = 19,712,973.10/x
  3. Step 3: Cross multiply
    28,404,985.90x = 42,607,478.85 × 19,712,973.10
  4. Step 4: Simplify right side
    28,404,985.90x = 839,920,084,428,869
  5. Step 5: Solve for x
    x = 839,920,084,428,869/28,404,985.90
  6. Step 6: Final answer
    x = 29,569,459.65

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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.