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Finding the Fourth Proportional to 15,658,598.52, 21,608,821.72 and 8,690,328.10

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Solution

The fourth proportional to 15,658,598.52, 21,608,821.72 and 8,690,328.10 is: 11,992,628.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658,598.52 : 21,608,821.72 = 8,690,328.10 : x
  2. Step 2: Convert to fraction form
    15,658,598.52/21,608,821.72 = 8,690,328.10/x
  3. Step 3: Cross multiply
    15,658,598.52x = 21,608,821.72 × 8,690,328.10
  4. Step 4: Simplify right side
    15,658,598.52x = 187,787,750,601,206.31
  5. Step 5: Solve for x
    x = 187,787,750,601,206.31/15,658,598.52
  6. Step 6: Final answer
    x = 11,992,628.23

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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.