Home / 31,781.56-47,677.20-10,427.64

Finding the Fourth Proportional to 31,781.56, 47,677.20 and 10,427.64

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Solution

The fourth proportional to 31,781.56, 47,677.20 and 10,427.64 is: 15,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.56 : 47,677.20 = 10,427.64 : x
  2. Step 2: Convert to fraction form
    31,781.56/47,677.20 = 10,427.64/x
  3. Step 3: Cross multiply
    31,781.56x = 47,677.20 × 10,427.64
  4. Step 4: Simplify right side
    31,781.56x = 497,160,677.81
  5. Step 5: Solve for x
    x = 497,160,677.81/31,781.56
  6. Step 6: Final answer
    x = 15,643.05

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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.