Home / 15,456.93-21,331.62-8,742.53

Finding the Fourth Proportional to 15,456.93, 21,331.62 and 8,742.53

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Solution

The fourth proportional to 15,456.93, 21,331.62 and 8,742.53 is: 12,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.93 : 21,331.62 = 8,742.53 : x
  2. Step 2: Convert to fraction form
    15,456.93/21,331.62 = 8,742.53/x
  3. Step 3: Cross multiply
    15,456.93x = 21,331.62 × 8,742.53
  4. Step 4: Simplify right side
    15,456.93x = 186,492,381.13
  5. Step 5: Solve for x
    x = 186,492,381.13/15,456.93
  6. Step 6: Final answer
    x = 12,065.30

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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.