Home / 28,049.76-38,708.15-15,303.02

Finding the Fourth Proportional to 28,049.76, 38,708.15 and 15,303.02

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Solution

The fourth proportional to 28,049.76, 38,708.15 and 15,303.02 is: 21,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.76 : 38,708.15 = 15,303.02 : x
  2. Step 2: Convert to fraction form
    28,049.76/38,708.15 = 15,303.02/x
  3. Step 3: Cross multiply
    28,049.76x = 38,708.15 × 15,303.02
  4. Step 4: Simplify right side
    28,049.76x = 592,351,323.56
  5. Step 5: Solve for x
    x = 592,351,323.56/28,049.76
  6. Step 6: Final answer
    x = 21,117.87

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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.