Home / 13,407.53-18,502.11-7,439.07

Finding the Fourth Proportional to 13,407.53, 18,502.11 and 7,439.07

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Solution

The fourth proportional to 13,407.53, 18,502.11 and 7,439.07 is: 10,265.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.53 : 18,502.11 = 7,439.07 : x
  2. Step 2: Convert to fraction form
    13,407.53/18,502.11 = 7,439.07/x
  3. Step 3: Cross multiply
    13,407.53x = 18,502.11 × 7,439.07
  4. Step 4: Simplify right side
    13,407.53x = 137,638,472.84
  5. Step 5: Solve for x
    x = 137,638,472.84/13,407.53
  6. Step 6: Final answer
    x = 10,265.76

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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.