Home / 15,905.40-23,821.65-15,540.90

Finding the Fourth Proportional to 15,905.40, 23,821.65 and 15,540.90

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Solution

The fourth proportional to 15,905.40, 23,821.65 and 15,540.90 is: 23,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.40 : 23,821.65 = 15,540.90 : x
  2. Step 2: Convert to fraction form
    15,905.40/23,821.65 = 15,540.90/x
  3. Step 3: Cross multiply
    15,905.40x = 23,821.65 × 15,540.90
  4. Step 4: Simplify right side
    15,905.40x = 370,209,880.49
  5. Step 5: Solve for x
    x = 370,209,880.49/15,905.40
  6. Step 6: Final answer
    x = 23,275.74

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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.