Home / 28,605.60-42,937.20-13,826.40

Finding the Fourth Proportional to 28,605.60, 42,937.20 and 13,826.40

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Solution

The fourth proportional to 28,605.60, 42,937.20 and 13,826.40 is: 20,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.60 : 42,937.20 = 13,826.40 : x
  2. Step 2: Convert to fraction form
    28,605.60/42,937.20 = 13,826.40/x
  3. Step 3: Cross multiply
    28,605.60x = 42,937.20 × 13,826.40
  4. Step 4: Simplify right side
    28,605.60x = 593,666,902.08
  5. Step 5: Solve for x
    x = 593,666,902.08/28,605.60
  6. Step 6: Final answer
    x = 20,753.52

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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.