Home / 19,981.60-27,570-11,593.12

Finding the Fourth Proportional to 19,981.60, 27,570 and 11,593.12

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Solution

The fourth proportional to 19,981.60, 27,570 and 11,593.12 is: 15,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.60 : 27,570 = 11,593.12 : x
  2. Step 2: Convert to fraction form
    19,981.60/27,570 = 11,593.12/x
  3. Step 3: Cross multiply
    19,981.60x = 27,570 × 11,593.12
  4. Step 4: Simplify right side
    19,981.60x = 319,622,318.40
  5. Step 5: Solve for x
    x = 319,622,318.40/19,981.60
  6. Step 6: Final answer
    x = 15,995.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.