Home / 13,053.28-18,004.20-9,218.74

Finding the Fourth Proportional to 13,053.28, 18,004.20 and 9,218.74

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Solution

The fourth proportional to 13,053.28, 18,004.20 and 9,218.74 is: 12,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.28 : 18,004.20 = 9,218.74 : x
  2. Step 2: Convert to fraction form
    13,053.28/18,004.20 = 9,218.74/x
  3. Step 3: Cross multiply
    13,053.28x = 18,004.20 × 9,218.74
  4. Step 4: Simplify right side
    13,053.28x = 165,976,038.71
  5. Step 5: Solve for x
    x = 165,976,038.71/13,053.28
  6. Step 6: Final answer
    x = 12,715.27

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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.