Home / 15,528.12-21,424.14-14,031.24

Finding the Fourth Proportional to 15,528.12, 21,424.14 and 14,031.24

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Solution

The fourth proportional to 15,528.12, 21,424.14 and 14,031.24 is: 19,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.12 : 21,424.14 = 14,031.24 : x
  2. Step 2: Convert to fraction form
    15,528.12/21,424.14 = 14,031.24/x
  3. Step 3: Cross multiply
    15,528.12x = 21,424.14 × 14,031.24
  4. Step 4: Simplify right side
    15,528.12x = 300,607,250.13
  5. Step 5: Solve for x
    x = 300,607,250.13/15,528.12
  6. Step 6: Final answer
    x = 19,358.90

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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.