Home / 13,407.86-18,502.93-7,439.65

Finding the Fourth Proportional to 13,407.86, 18,502.93 and 7,439.65

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Solution

The fourth proportional to 13,407.86, 18,502.93 and 7,439.65 is: 10,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.86 : 18,502.93 = 7,439.65 : x
  2. Step 2: Convert to fraction form
    13,407.86/18,502.93 = 7,439.65/x
  3. Step 3: Cross multiply
    13,407.86x = 18,502.93 × 7,439.65
  4. Step 4: Simplify right side
    13,407.86x = 137,655,286.22
  5. Step 5: Solve for x
    x = 137,655,286.22/13,407.86
  6. Step 6: Final answer
    x = 10,266.76

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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.