Home / 13,407.91-18,502.63-7,439.45

Finding the Fourth Proportional to 13,407.91, 18,502.63 and 7,439.45

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Solution

The fourth proportional to 13,407.91, 18,502.63 and 7,439.45 is: 10,266.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.91 : 18,502.63 = 7,439.45 : x
  2. Step 2: Convert to fraction form
    13,407.91/18,502.63 = 7,439.45/x
  3. Step 3: Cross multiply
    13,407.91x = 18,502.63 × 7,439.45
  4. Step 4: Simplify right side
    13,407.91x = 137,649,279.64
  5. Step 5: Solve for x
    x = 137,649,279.64/13,407.91
  6. Step 6: Final answer
    x = 10,266.28

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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.