Home / 20,316.17-28,037.39-11,363.15

Finding the Fourth Proportional to 20,316.17, 28,037.39 and 11,363.15

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Solution

The fourth proportional to 20,316.17, 28,037.39 and 11,363.15 is: 15,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.17 : 28,037.39 = 11,363.15 : x
  2. Step 2: Convert to fraction form
    20,316.17/28,037.39 = 11,363.15/x
  3. Step 3: Cross multiply
    20,316.17x = 28,037.39 × 11,363.15
  4. Step 4: Simplify right side
    20,316.17x = 318,593,081.46
  5. Step 5: Solve for x
    x = 318,593,081.46/20,316.17
  6. Step 6: Final answer
    x = 15,681.75

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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.