Home / 13,312.65-18,350.01-9,721.92

Finding the Fourth Proportional to 13,312.65, 18,350.01 and 9,721.92

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Solution

The fourth proportional to 13,312.65, 18,350.01 and 9,721.92 is: 13,400.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.65 : 18,350.01 = 9,721.92 : x
  2. Step 2: Convert to fraction form
    13,312.65/18,350.01 = 9,721.92/x
  3. Step 3: Cross multiply
    13,312.65x = 18,350.01 × 9,721.92
  4. Step 4: Simplify right side
    13,312.65x = 178,397,329.22
  5. Step 5: Solve for x
    x = 178,397,329.22/13,312.65
  6. Step 6: Final answer
    x = 13,400.59

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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.