Home / 15,703.16-21,670.29-8,988.75

Finding the Fourth Proportional to 15,703.16, 21,670.29 and 8,988.75

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Solution

The fourth proportional to 15,703.16, 21,670.29 and 8,988.75 is: 12,404.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.16 : 21,670.29 = 8,988.75 : x
  2. Step 2: Convert to fraction form
    15,703.16/21,670.29 = 8,988.75/x
  3. Step 3: Cross multiply
    15,703.16x = 21,670.29 × 8,988.75
  4. Step 4: Simplify right side
    15,703.16x = 194,788,819.24
  5. Step 5: Solve for x
    x = 194,788,819.24/15,703.16
  6. Step 6: Final answer
    x = 12,404.43

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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.