Home / 10,255.40-15,378.60-4,706.90

Finding the Fourth Proportional to 10,255.40, 15,378.60 and 4,706.90

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Solution

The fourth proportional to 10,255.40, 15,378.60 and 4,706.90 is: 7,058.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.40 : 15,378.60 = 4,706.90 : x
  2. Step 2: Convert to fraction form
    10,255.40/15,378.60 = 4,706.90/x
  3. Step 3: Cross multiply
    10,255.40x = 15,378.60 × 4,706.90
  4. Step 4: Simplify right side
    10,255.40x = 72,385,532.34
  5. Step 5: Solve for x
    x = 72,385,532.34/10,255.40
  6. Step 6: Final answer
    x = 7,058.28

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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.