Home / 28,486.03-42,691.86-20,615.05

Finding the Fourth Proportional to 28,486.03, 42,691.86 and 20,615.05

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Solution

The fourth proportional to 28,486.03, 42,691.86 and 20,615.05 is: 30,895.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.03 : 42,691.86 = 20,615.05 : x
  2. Step 2: Convert to fraction form
    28,486.03/42,691.86 = 20,615.05/x
  3. Step 3: Cross multiply
    28,486.03x = 42,691.86 × 20,615.05
  4. Step 4: Simplify right side
    28,486.03x = 880,094,828.49
  5. Step 5: Solve for x
    x = 880,094,828.49/28,486.03
  6. Step 6: Final answer
    x = 30,895.66

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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.