Home / 20,426.17-28,188.13-11,473.68

Finding the Fourth Proportional to 20,426.17, 28,188.13 and 11,473.68

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Solution

The fourth proportional to 20,426.17, 28,188.13 and 11,473.68 is: 15,833.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.17 : 28,188.13 = 11,473.68 : x
  2. Step 2: Convert to fraction form
    20,426.17/28,188.13 = 11,473.68/x
  3. Step 3: Cross multiply
    20,426.17x = 28,188.13 × 11,473.68
  4. Step 4: Simplify right side
    20,426.17x = 323,421,484.26
  5. Step 5: Solve for x
    x = 323,421,484.26/20,426.17
  6. Step 6: Final answer
    x = 15,833.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.