Home / 28,002.28-38,643.08-15,427.04

Finding the Fourth Proportional to 28,002.28, 38,643.08 and 15,427.04

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Solution

The fourth proportional to 28,002.28, 38,643.08 and 15,427.04 is: 21,289.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.28 : 38,643.08 = 15,427.04 : x
  2. Step 2: Convert to fraction form
    28,002.28/38,643.08 = 15,427.04/x
  3. Step 3: Cross multiply
    28,002.28x = 38,643.08 × 15,427.04
  4. Step 4: Simplify right side
    28,002.28x = 596,148,340.88
  5. Step 5: Solve for x
    x = 596,148,340.88/28,002.28
  6. Step 6: Final answer
    x = 21,289.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.