Home / 15,155.07-20,897.28-10,375.80

Finding the Fourth Proportional to 15,155.07, 20,897.28 and 10,375.80

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Solution

The fourth proportional to 15,155.07, 20,897.28 and 10,375.80 is: 14,307.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.07 : 20,897.28 = 10,375.80 : x
  2. Step 2: Convert to fraction form
    15,155.07/20,897.28 = 10,375.80/x
  3. Step 3: Cross multiply
    15,155.07x = 20,897.28 × 10,375.80
  4. Step 4: Simplify right side
    15,155.07x = 216,825,997.82
  5. Step 5: Solve for x
    x = 216,825,997.82/15,155.07
  6. Step 6: Final answer
    x = 14,307.16

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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.