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Finding the Fourth Proportional to 28,001.99, 42,000.64 and 9,275.91

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Solution

The fourth proportional to 28,001.99, 42,000.64 and 9,275.91 is: 13,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.99 : 42,000.64 = 9,275.91 : x
  2. Step 2: Convert to fraction form
    28,001.99/42,000.64 = 9,275.91/x
  3. Step 3: Cross multiply
    28,001.99x = 42,000.64 × 9,275.91
  4. Step 4: Simplify right side
    28,001.99x = 389,594,156.58
  5. Step 5: Solve for x
    x = 389,594,156.58/28,001.99
  6. Step 6: Final answer
    x = 13,913.09

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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.