Home / 9,868.70-13,618.28-5,391.59

Finding the Fourth Proportional to 9,868.70, 13,618.28 and 5,391.59

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Solution

The fourth proportional to 9,868.70, 13,618.28 and 5,391.59 is: 7,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.70 : 13,618.28 = 5,391.59 : x
  2. Step 2: Convert to fraction form
    9,868.70/13,618.28 = 5,391.59/x
  3. Step 3: Cross multiply
    9,868.70x = 13,618.28 × 5,391.59
  4. Step 4: Simplify right side
    9,868.70x = 73,424,127.65
  5. Step 5: Solve for x
    x = 73,424,127.65/9,868.70
  6. Step 6: Final answer
    x = 7,440.10

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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.