Home / 15,153.80-20,898.42-9,555.08

Finding the Fourth Proportional to 15,153.80, 20,898.42 and 9,555.08

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Solution

The fourth proportional to 15,153.80, 20,898.42 and 9,555.08 is: 13,177.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.80 : 20,898.42 = 9,555.08 : x
  2. Step 2: Convert to fraction form
    15,153.80/20,898.42 = 9,555.08/x
  3. Step 3: Cross multiply
    15,153.80x = 20,898.42 × 9,555.08
  4. Step 4: Simplify right side
    15,153.80x = 199,686,074.97
  5. Step 5: Solve for x
    x = 199,686,074.97/15,153.80
  6. Step 6: Final answer
    x = 13,177.29

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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.