Home / 28,601.60-42,931.20-13,822.40

Finding the Fourth Proportional to 28,601.60, 42,931.20 and 13,822.40

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Solution

The fourth proportional to 28,601.60, 42,931.20 and 13,822.40 is: 20,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601.60 : 42,931.20 = 13,822.40 : x
  2. Step 2: Convert to fraction form
    28,601.60/42,931.20 = 13,822.40/x
  3. Step 3: Cross multiply
    28,601.60x = 42,931.20 × 13,822.40
  4. Step 4: Simplify right side
    28,601.60x = 593,412,218.88
  5. Step 5: Solve for x
    x = 593,412,218.88/28,601.60
  6. Step 6: Final answer
    x = 20,747.52

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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.