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Finding the Fourth Proportional to 28,697.58, 42,966.18 and 15,502.68

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Solution

The fourth proportional to 28,697.58, 42,966.18 and 15,502.68 is: 23,210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.58 : 42,966.18 = 15,502.68 : x
  2. Step 2: Convert to fraction form
    28,697.58/42,966.18 = 15,502.68/x
  3. Step 3: Cross multiply
    28,697.58x = 42,966.18 × 15,502.68
  4. Step 4: Simplify right side
    28,697.58x = 666,090,939.36
  5. Step 5: Solve for x
    x = 666,090,939.36/28,697.58
  6. Step 6: Final answer
    x = 23,210.70

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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.