Home / 15,085.52-20,805.36-9,708.80

Finding the Fourth Proportional to 15,085.52, 20,805.36 and 9,708.80

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Solution

The fourth proportional to 15,085.52, 20,805.36 and 9,708.80 is: 13,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.52 : 20,805.36 = 9,708.80 : x
  2. Step 2: Convert to fraction form
    15,085.52/20,805.36 = 9,708.80/x
  3. Step 3: Cross multiply
    15,085.52x = 20,805.36 × 9,708.80
  4. Step 4: Simplify right side
    15,085.52x = 201,995,079.17
  5. Step 5: Solve for x
    x = 201,995,079.17/15,085.52
  6. Step 6: Final answer
    x = 13,390.00

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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.