Home / 15,300.98-21,116.40-8,587.16

Finding the Fourth Proportional to 15,300.98, 21,116.40 and 8,587.16

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Solution

The fourth proportional to 15,300.98, 21,116.40 and 8,587.16 is: 11,850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.98 : 21,116.40 = 8,587.16 : x
  2. Step 2: Convert to fraction form
    15,300.98/21,116.40 = 8,587.16/x
  3. Step 3: Cross multiply
    15,300.98x = 21,116.40 × 8,587.16
  4. Step 4: Simplify right side
    15,300.98x = 181,329,905.42
  5. Step 5: Solve for x
    x = 181,329,905.42/15,300.98
  6. Step 6: Final answer
    x = 11,850.87

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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.