Home / 31,536.36-47,308.20-10,478.28

Finding the Fourth Proportional to 31,536.36, 47,308.20 and 10,478.28

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Solution

The fourth proportional to 31,536.36, 47,308.20 and 10,478.28 is: 15,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,536.36 : 47,308.20 = 10,478.28 : x
  2. Step 2: Convert to fraction form
    31,536.36/47,308.20 = 10,478.28/x
  3. Step 3: Cross multiply
    31,536.36x = 47,308.20 × 10,478.28
  4. Step 4: Simplify right side
    31,536.36x = 495,708,565.90
  5. Step 5: Solve for x
    x = 495,708,565.90/31,536.36
  6. Step 6: Final answer
    x = 15,718.64

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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.