Home / 10,565.71-15,855.75-5,638.88

Finding the Fourth Proportional to 10,565.71, 15,855.75 and 5,638.88

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Solution

The fourth proportional to 10,565.71, 15,855.75 and 5,638.88 is: 8,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,565.71 : 15,855.75 = 5,638.88 : x
  2. Step 2: Convert to fraction form
    10,565.71/15,855.75 = 5,638.88/x
  3. Step 3: Cross multiply
    10,565.71x = 15,855.75 × 5,638.88
  4. Step 4: Simplify right side
    10,565.71x = 89,408,711.20
  5. Step 5: Solve for x
    x = 89,408,711.20/10,565.71
  6. Step 6: Final answer
    x = 8,462.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.