Home / 28,632.18-39,512.64-15,886.20

Finding the Fourth Proportional to 28,632.18, 39,512.64 and 15,886.20

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Solution

The fourth proportional to 28,632.18, 39,512.64 and 15,886.20 is: 21,923.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.18 : 39,512.64 = 15,886.20 : x
  2. Step 2: Convert to fraction form
    28,632.18/39,512.64 = 15,886.20/x
  3. Step 3: Cross multiply
    28,632.18x = 39,512.64 × 15,886.20
  4. Step 4: Simplify right side
    28,632.18x = 627,705,701.57
  5. Step 5: Solve for x
    x = 627,705,701.57/28,632.18
  6. Step 6: Final answer
    x = 21,923.08

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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.