Home / 15,367.52-21,218.56-9,407.34

Finding the Fourth Proportional to 15,367.52, 21,218.56 and 9,407.34

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Solution

The fourth proportional to 15,367.52, 21,218.56 and 9,407.34 is: 12,989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.52 : 21,218.56 = 9,407.34 : x
  2. Step 2: Convert to fraction form
    15,367.52/21,218.56 = 9,407.34/x
  3. Step 3: Cross multiply
    15,367.52x = 21,218.56 × 9,407.34
  4. Step 4: Simplify right side
    15,367.52x = 199,610,184.71
  5. Step 5: Solve for x
    x = 199,610,184.71/15,367.52
  6. Step 6: Final answer
    x = 12,989.09

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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.