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Finding the Fourth Proportional to 18,785.60, 28,210.80 and 10,037.60

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Solution

The fourth proportional to 18,785.60, 28,210.80 and 10,037.60 is: 15,073.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.60 : 28,210.80 = 10,037.60 : x
  2. Step 2: Convert to fraction form
    18,785.60/28,210.80 = 10,037.60/x
  3. Step 3: Cross multiply
    18,785.60x = 28,210.80 × 10,037.60
  4. Step 4: Simplify right side
    18,785.60x = 283,168,726.08
  5. Step 5: Solve for x
    x = 283,168,726.08/18,785.60
  6. Step 6: Final answer
    x = 15,073.71

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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.