Home / 13,389.68-18,479.40-7,801.04

Finding the Fourth Proportional to 13,389.68, 18,479.40 and 7,801.04

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Solution

The fourth proportional to 13,389.68, 18,479.40 and 7,801.04 is: 10,766.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.68 : 18,479.40 = 7,801.04 : x
  2. Step 2: Convert to fraction form
    13,389.68/18,479.40 = 7,801.04/x
  3. Step 3: Cross multiply
    13,389.68x = 18,479.40 × 7,801.04
  4. Step 4: Simplify right side
    13,389.68x = 144,158,538.58
  5. Step 5: Solve for x
    x = 144,158,538.58/13,389.68
  6. Step 6: Final answer
    x = 10,766.39

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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.