Home / 18,887.36-28,308.16-7,031.52

Finding the Fourth Proportional to 18,887.36, 28,308.16 and 7,031.52

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Solution

The fourth proportional to 18,887.36, 28,308.16 and 7,031.52 is: 10,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.36 : 28,308.16 = 7,031.52 : x
  2. Step 2: Convert to fraction form
    18,887.36/28,308.16 = 7,031.52/x
  3. Step 3: Cross multiply
    18,887.36x = 28,308.16 × 7,031.52
  4. Step 4: Simplify right side
    18,887.36x = 199,049,393.20
  5. Step 5: Solve for x
    x = 199,049,393.20/18,887.36
  6. Step 6: Final answer
    x = 10,538.76

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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.