Home / 13,386.51-18,472.19-7,416.61

Finding the Fourth Proportional to 13,386.51, 18,472.19 and 7,416.61

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Solution

The fourth proportional to 13,386.51, 18,472.19 and 7,416.61 is: 10,234.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.51 : 18,472.19 = 7,416.61 : x
  2. Step 2: Convert to fraction form
    13,386.51/18,472.19 = 7,416.61/x
  3. Step 3: Cross multiply
    13,386.51x = 18,472.19 × 7,416.61
  4. Step 4: Simplify right side
    13,386.51x = 137,000,945.81
  5. Step 5: Solve for x
    x = 137,000,945.81/13,386.51
  6. Step 6: Final answer
    x = 10,234.25

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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.