Home / 28,792.95-43,189.43-13,989.12

Finding the Fourth Proportional to 28,792.95, 43,189.43 and 13,989.12

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Solution

The fourth proportional to 28,792.95, 43,189.43 and 13,989.12 is: 20,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.95 : 43,189.43 = 13,989.12 : x
  2. Step 2: Convert to fraction form
    28,792.95/43,189.43 = 13,989.12/x
  3. Step 3: Cross multiply
    28,792.95x = 43,189.43 × 13,989.12
  4. Step 4: Simplify right side
    28,792.95x = 604,182,049.06
  5. Step 5: Solve for x
    x = 604,182,049.06/28,792.95
  6. Step 6: Final answer
    x = 20,983.68

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Double scale
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Similar ratio
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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.