Home / 28,091.12-42,136.88-7,031.52

Finding the Fourth Proportional to 28,091.12, 42,136.88 and 7,031.52

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Solution

The fourth proportional to 28,091.12, 42,136.88 and 7,031.52 is: 10,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.12 : 42,136.88 = 7,031.52 : x
  2. Step 2: Convert to fraction form
    28,091.12/42,136.88 = 7,031.52/x
  3. Step 3: Cross multiply
    28,091.12x = 42,136.88 × 7,031.52
  4. Step 4: Simplify right side
    28,091.12x = 296,286,279.30
  5. Step 5: Solve for x
    x = 296,286,279.30/28,091.12
  6. Step 6: Final answer
    x = 10,547.33

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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.