Home / 15,376.15-21,207.72-9,402.94

Finding the Fourth Proportional to 15,376.15, 21,207.72 and 9,402.94

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Solution

The fourth proportional to 15,376.15, 21,207.72 and 9,402.94 is: 12,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.15 : 21,207.72 = 9,402.94 : x
  2. Step 2: Convert to fraction form
    15,376.15/21,207.72 = 9,402.94/x
  3. Step 3: Cross multiply
    15,376.15x = 21,207.72 × 9,402.94
  4. Step 4: Simplify right side
    15,376.15x = 199,414,918.70
  5. Step 5: Solve for x
    x = 199,414,918.70/15,376.15
  6. Step 6: Final answer
    x = 12,969.11

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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.