Home / 28,427.28-42,656.30-14,403.14

Finding the Fourth Proportional to 28,427.28, 42,656.30 and 14,403.14

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Solution

The fourth proportional to 28,427.28, 42,656.30 and 14,403.14 is: 21,612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.28 : 42,656.30 = 14,403.14 : x
  2. Step 2: Convert to fraction form
    28,427.28/42,656.30 = 14,403.14/x
  3. Step 3: Cross multiply
    28,427.28x = 42,656.30 × 14,403.14
  4. Step 4: Simplify right side
    28,427.28x = 614,384,668.92
  5. Step 5: Solve for x
    x = 614,384,668.92/28,427.28
  6. Step 6: Final answer
    x = 21,612.50

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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.