Home / 13,128,966.86-18,103,691.31-8,536,772.30

Finding the Fourth Proportional to 13,128,966.86, 18,103,691.31 and 8,536,772.30

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Solution

The fourth proportional to 13,128,966.86, 18,103,691.31 and 8,536,772.30 is: 11,771,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128,966.86 : 18,103,691.31 = 8,536,772.30 : x
  2. Step 2: Convert to fraction form
    13,128,966.86/18,103,691.31 = 8,536,772.30/x
  3. Step 3: Cross multiply
    13,128,966.86x = 18,103,691.31 × 8,536,772.30
  4. Step 4: Simplify right side
    13,128,966.86x = 154,547,090,502,958.72
  5. Step 5: Solve for x
    x = 154,547,090,502,958.72/13,128,966.86
  6. Step 6: Final answer
    x = 11,771,458.65

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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.