Home / 28,319.40-42,344.16-25,840.80

Finding the Fourth Proportional to 28,319.40, 42,344.16 and 25,840.80

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Solution

The fourth proportional to 28,319.40, 42,344.16 and 25,840.80 is: 38,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.40 : 42,344.16 = 25,840.80 : x
  2. Step 2: Convert to fraction form
    28,319.40/42,344.16 = 25,840.80/x
  3. Step 3: Cross multiply
    28,319.40x = 42,344.16 × 25,840.80
  4. Step 4: Simplify right side
    28,319.40x = 1,094,206,969.73
  5. Step 5: Solve for x
    x = 1,094,206,969.73/28,319.40
  6. Step 6: Final answer
    x = 38,638.07

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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.