Home / 17,981.60-24,758.13-15,287.51

Finding the Fourth Proportional to 17,981.60, 24,758.13 and 15,287.51

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Solution

The fourth proportional to 17,981.60, 24,758.13 and 15,287.51 is: 21,048.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.60 : 24,758.13 = 15,287.51 : x
  2. Step 2: Convert to fraction form
    17,981.60/24,758.13 = 15,287.51/x
  3. Step 3: Cross multiply
    17,981.60x = 24,758.13 × 15,287.51
  4. Step 4: Simplify right side
    17,981.60x = 378,490,159.96
  5. Step 5: Solve for x
    x = 378,490,159.96/17,981.60
  6. Step 6: Final answer
    x = 21,048.75

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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.