Home / 28,451.66-39,264.36-15,878.84

Finding the Fourth Proportional to 28,451.66, 39,264.36 and 15,878.84

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Solution

The fourth proportional to 28,451.66, 39,264.36 and 15,878.84 is: 21,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.66 : 39,264.36 = 15,878.84 : x
  2. Step 2: Convert to fraction form
    28,451.66/39,264.36 = 15,878.84/x
  3. Step 3: Cross multiply
    28,451.66x = 39,264.36 × 15,878.84
  4. Step 4: Simplify right side
    28,451.66x = 623,472,490.14
  5. Step 5: Solve for x
    x = 623,472,490.14/28,451.66
  6. Step 6: Final answer
    x = 21,913.40

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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.