Home / 10,521.27-15,781.91-4,284.68

Finding the Fourth Proportional to 10,521.27, 15,781.91 and 4,284.68

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Solution

The fourth proportional to 10,521.27, 15,781.91 and 4,284.68 is: 6,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.27 : 15,781.91 = 4,284.68 : x
  2. Step 2: Convert to fraction form
    10,521.27/15,781.91 = 4,284.68/x
  3. Step 3: Cross multiply
    10,521.27x = 15,781.91 × 4,284.68
  4. Step 4: Simplify right side
    10,521.27x = 67,620,333.81
  5. Step 5: Solve for x
    x = 67,620,333.81/10,521.27
  6. Step 6: Final answer
    x = 6,427.01

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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.