Home / 28,186.40-42,255.30-14,335.40

Finding the Fourth Proportional to 28,186.40, 42,255.30 and 14,335.40

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Solution

The fourth proportional to 28,186.40, 42,255.30 and 14,335.40 is: 21,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.40 : 42,255.30 = 14,335.40 : x
  2. Step 2: Convert to fraction form
    28,186.40/42,255.30 = 14,335.40/x
  3. Step 3: Cross multiply
    28,186.40x = 42,255.30 × 14,335.40
  4. Step 4: Simplify right side
    28,186.40x = 605,746,627.62
  5. Step 5: Solve for x
    x = 605,746,627.62/28,186.40
  6. Step 6: Final answer
    x = 21,490.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.