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Finding the Fourth Proportional to 18,710.10, 28,097.55 and 9,962.10

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Solution

The fourth proportional to 18,710.10, 28,097.55 and 9,962.10 is: 14,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.10 : 28,097.55 = 9,962.10 : x
  2. Step 2: Convert to fraction form
    18,710.10/28,097.55 = 9,962.10/x
  3. Step 3: Cross multiply
    18,710.10x = 28,097.55 × 9,962.10
  4. Step 4: Simplify right side
    18,710.10x = 279,910,602.86
  5. Step 5: Solve for x
    x = 279,910,602.86/18,710.10
  6. Step 6: Final answer
    x = 14,960.40

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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.