Home / 28,553.64-42,830.76-12,759.48

Finding the Fourth Proportional to 28,553.64, 42,830.76 and 12,759.48

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Solution

The fourth proportional to 28,553.64, 42,830.76 and 12,759.48 is: 19,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.64 : 42,830.76 = 12,759.48 : x
  2. Step 2: Convert to fraction form
    28,553.64/42,830.76 = 12,759.48/x
  3. Step 3: Cross multiply
    28,553.64x = 42,830.76 × 12,759.48
  4. Step 4: Simplify right side
    28,553.64x = 546,498,225.60
  5. Step 5: Solve for x
    x = 546,498,225.60/28,553.64
  6. Step 6: Final answer
    x = 19,139.35

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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.