Home / 18,515.31-27,756.55-14,152.24

Finding the Fourth Proportional to 18,515.31, 27,756.55 and 14,152.24

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Solution

The fourth proportional to 18,515.31, 27,756.55 and 14,152.24 is: 21,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.31 : 27,756.55 = 14,152.24 : x
  2. Step 2: Convert to fraction form
    18,515.31/27,756.55 = 14,152.24/x
  3. Step 3: Cross multiply
    18,515.31x = 27,756.55 × 14,152.24
  4. Step 4: Simplify right side
    18,515.31x = 392,817,357.17
  5. Step 5: Solve for x
    x = 392,817,357.17/18,515.31
  6. Step 6: Final answer
    x = 21,215.81

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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.