Home / 20,946.28-31,416.18-13,602.82

Finding the Fourth Proportional to 20,946.28, 31,416.18 and 13,602.82

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Solution

The fourth proportional to 20,946.28, 31,416.18 and 13,602.82 is: 20,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.28 : 31,416.18 = 13,602.82 : x
  2. Step 2: Convert to fraction form
    20,946.28/31,416.18 = 13,602.82/x
  3. Step 3: Cross multiply
    20,946.28x = 31,416.18 × 13,602.82
  4. Step 4: Simplify right side
    20,946.28x = 427,348,641.63
  5. Step 5: Solve for x
    x = 427,348,641.63/20,946.28
  6. Step 6: Final answer
    x = 20,402.13

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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.