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Finding the Fourth Proportional to 15,660,085.80, 21,974,508.60 and 15,660,085.80

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Solution

The fourth proportional to 15,660,085.80, 21,974,508.60 and 15,660,085.80 is: 21,974,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660,085.80 : 21,974,508.60 = 15,660,085.80 : x
  2. Step 2: Convert to fraction form
    15,660,085.80/21,974,508.60 = 15,660,085.80/x
  3. Step 3: Cross multiply
    15,660,085.80x = 21,974,508.60 × 15,660,085.80
  4. Step 4: Simplify right side
    15,660,085.80x = 344,122,690,088,837.94
  5. Step 5: Solve for x
    x = 344,122,690,088,837.94/15,660,085.80
  6. Step 6: Final answer
    x = 21,974,508.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.