Home / 13,312.65-18,371.19-7,344.47

Finding the Fourth Proportional to 13,312.65, 18,371.19 and 7,344.47

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Solution

The fourth proportional to 13,312.65, 18,371.19 and 7,344.47 is: 10,135.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.65 : 18,371.19 = 7,344.47 : x
  2. Step 2: Convert to fraction form
    13,312.65/18,371.19 = 7,344.47/x
  3. Step 3: Cross multiply
    13,312.65x = 18,371.19 × 7,344.47
  4. Step 4: Simplify right side
    13,312.65x = 134,926,561.96
  5. Step 5: Solve for x
    x = 134,926,561.96/13,312.65
  6. Step 6: Final answer
    x = 10,135.21

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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.