Home / 15,741.16-21,715.32-9,770.92

Finding the Fourth Proportional to 15,741.16, 21,715.32 and 9,770.92

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Solution

The fourth proportional to 15,741.16, 21,715.32 and 9,770.92 is: 13,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.16 : 21,715.32 = 9,770.92 : x
  2. Step 2: Convert to fraction form
    15,741.16/21,715.32 = 9,770.92/x
  3. Step 3: Cross multiply
    15,741.16x = 21,715.32 × 9,770.92
  4. Step 4: Simplify right side
    15,741.16x = 212,178,654.49
  5. Step 5: Solve for x
    x = 212,178,654.49/15,741.16
  6. Step 6: Final answer
    x = 13,479.23

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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.