Home / 15,371.72-21,214.58-9,407.36

Finding the Fourth Proportional to 15,371.72, 21,214.58 and 9,407.36

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Solution

The fourth proportional to 15,371.72, 21,214.58 and 9,407.36 is: 12,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.72 : 21,214.58 = 9,407.36 : x
  2. Step 2: Convert to fraction form
    15,371.72/21,214.58 = 9,407.36/x
  3. Step 3: Cross multiply
    15,371.72x = 21,214.58 × 9,407.36
  4. Step 4: Simplify right side
    15,371.72x = 199,573,191.31
  5. Step 5: Solve for x
    x = 199,573,191.31/15,371.72
  6. Step 6: Final answer
    x = 12,983.14

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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.