Home / 15,444.12-21,315.48-9,157.68

Finding the Fourth Proportional to 15,444.12, 21,315.48 and 9,157.68

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Solution

The fourth proportional to 15,444.12, 21,315.48 and 9,157.68 is: 12,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.12 : 21,315.48 = 9,157.68 : x
  2. Step 2: Convert to fraction form
    15,444.12/21,315.48 = 9,157.68/x
  3. Step 3: Cross multiply
    15,444.12x = 21,315.48 × 9,157.68
  4. Step 4: Simplify right side
    15,444.12x = 195,200,344.89
  5. Step 5: Solve for x
    x = 195,200,344.89/15,444.12
  6. Step 6: Final answer
    x = 12,639.14

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Similar ratio
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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.