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Finding the Fourth Proportional to 28,434.99, 42,643.25 and 9,454.52

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Solution

The fourth proportional to 28,434.99, 42,643.25 and 9,454.52 is: 14,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.99 : 42,643.25 = 9,454.52 : x
  2. Step 2: Convert to fraction form
    28,434.99/42,643.25 = 9,454.52/x
  3. Step 3: Cross multiply
    28,434.99x = 42,643.25 × 9,454.52
  4. Step 4: Simplify right side
    28,434.99x = 403,171,199.50
  5. Step 5: Solve for x
    x = 403,171,199.50/28,434.99
  6. Step 6: Final answer
    x = 14,178.70

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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.