Home / 28,134.70-38,820.27-15,557.02

Finding the Fourth Proportional to 28,134.70, 38,820.27 and 15,557.02

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Solution

The fourth proportional to 28,134.70, 38,820.27 and 15,557.02 is: 21,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.70 : 38,820.27 = 15,557.02 : x
  2. Step 2: Convert to fraction form
    28,134.70/38,820.27 = 15,557.02/x
  3. Step 3: Cross multiply
    28,134.70x = 38,820.27 × 15,557.02
  4. Step 4: Simplify right side
    28,134.70x = 603,927,716.80
  5. Step 5: Solve for x
    x = 603,927,716.80/28,134.70
  6. Step 6: Final answer
    x = 21,465.58

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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.