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Finding the Fourth Proportional to 15,000,495.09, 20,700,689.09 and 8,124,955.89

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Solution

The fourth proportional to 15,000,495.09, 20,700,689.09 and 8,124,955.89 is: 11,212,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000,495.09 : 20,700,689.09 = 8,124,955.89 : x
  2. Step 2: Convert to fraction form
    15,000,495.09/20,700,689.09 = 8,124,955.89/x
  3. Step 3: Cross multiply
    15,000,495.09x = 20,700,689.09 × 8,124,955.89
  4. Step 4: Simplify right side
    15,000,495.09x = 168,192,185,748,854.22
  5. Step 5: Solve for x
    x = 168,192,185,748,854.22/15,000,495.09
  6. Step 6: Final answer
    x = 11,212,442.31

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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.