Home / 28,103.28-42,188.88-13,124.64

Finding the Fourth Proportional to 28,103.28, 42,188.88 and 13,124.64

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Solution

The fourth proportional to 28,103.28, 42,188.88 and 13,124.64 is: 19,702.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.28 : 42,188.88 = 13,124.64 : x
  2. Step 2: Convert to fraction form
    28,103.28/42,188.88 = 13,124.64/x
  3. Step 3: Cross multiply
    28,103.28x = 42,188.88 × 13,124.64
  4. Step 4: Simplify right side
    28,103.28x = 553,713,862.00
  5. Step 5: Solve for x
    x = 553,713,862.00/28,103.28
  6. Step 6: Final answer
    x = 19,702.82

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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.