Home / 28,656.76-42,985.08-13,867.12

Finding the Fourth Proportional to 28,656.76, 42,985.08 and 13,867.12

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Solution

The fourth proportional to 28,656.76, 42,985.08 and 13,867.12 is: 20,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.76 : 42,985.08 = 13,867.12 : x
  2. Step 2: Convert to fraction form
    28,656.76/42,985.08 = 13,867.12/x
  3. Step 3: Cross multiply
    28,656.76x = 42,985.08 × 13,867.12
  4. Step 4: Simplify right side
    28,656.76x = 596,079,262.57
  5. Step 5: Solve for x
    x = 596,079,262.57/28,656.76
  6. Step 6: Final answer
    x = 20,800.65

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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.