Home / 28,031.64-42,031.95-11,147.55

Finding the Fourth Proportional to 28,031.64, 42,031.95 and 11,147.55

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Solution

The fourth proportional to 28,031.64, 42,031.95 and 11,147.55 is: 16,715.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.64 : 42,031.95 = 11,147.55 : x
  2. Step 2: Convert to fraction form
    28,031.64/42,031.95 = 11,147.55/x
  3. Step 3: Cross multiply
    28,031.64x = 42,031.95 × 11,147.55
  4. Step 4: Simplify right side
    28,031.64x = 468,553,264.22
  5. Step 5: Solve for x
    x = 468,553,264.22/28,031.64
  6. Step 6: Final answer
    x = 16,715.16

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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.