Home / 21,387,831.10-32,081,746.65-12,884,775.10

Finding the Fourth Proportional to 21,387,831.10, 32,081,746.65 and 12,884,775.10

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Solution

The fourth proportional to 21,387,831.10, 32,081,746.65 and 12,884,775.10 is: 19,327,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387,831.10 : 32,081,746.65 = 12,884,775.10 : x
  2. Step 2: Convert to fraction form
    21,387,831.10/32,081,746.65 = 12,884,775.10/x
  3. Step 3: Cross multiply
    21,387,831.10x = 32,081,746.65 × 12,884,775.10
  4. Step 4: Simplify right side
    21,387,831.10x = 413,366,090,400,428.38
  5. Step 5: Solve for x
    x = 413,366,090,400,428.38/21,387,831.10
  6. Step 6: Final answer
    x = 19,327,162.65

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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.