Home / 20,513.90-30,595.96-20,158.76

Finding the Fourth Proportional to 20,513.90, 30,595.96 and 20,158.76

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Solution

The fourth proportional to 20,513.90, 30,595.96 and 20,158.76 is: 30,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.90 : 30,595.96 = 20,158.76 : x
  2. Step 2: Convert to fraction form
    20,513.90/30,595.96 = 20,158.76/x
  3. Step 3: Cross multiply
    20,513.90x = 30,595.96 × 20,158.76
  4. Step 4: Simplify right side
    20,513.90x = 616,776,614.61
  5. Step 5: Solve for x
    x = 616,776,614.61/20,513.90
  6. Step 6: Final answer
    x = 30,066.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.