Home / 15,862,805.20-21,890,809.80-8,619,461.20

Finding the Fourth Proportional to 15,862,805.20, 21,890,809.80 and 8,619,461.20

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Solution

The fourth proportional to 15,862,805.20, 21,890,809.80 and 8,619,461.20 is: 11,894,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862,805.20 : 21,890,809.80 = 8,619,461.20 : x
  2. Step 2: Convert to fraction form
    15,862,805.20/21,890,809.80 = 8,619,461.20/x
  3. Step 3: Cross multiply
    15,862,805.20x = 21,890,809.80 × 8,619,461.20
  4. Step 4: Simplify right side
    15,862,805.20x = 188,686,985,707,679.75
  5. Step 5: Solve for x
    x = 188,686,985,707,679.75/15,862,805.20
  6. Step 6: Final answer
    x = 11,894,931.78

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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.