Home / 20,763.40-31,126.58-7,612.70

Finding the Fourth Proportional to 20,763.40, 31,126.58 and 7,612.70

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Solution

The fourth proportional to 20,763.40, 31,126.58 and 7,612.70 is: 11,412.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.40 : 31,126.58 = 7,612.70 : x
  2. Step 2: Convert to fraction form
    20,763.40/31,126.58 = 7,612.70/x
  3. Step 3: Cross multiply
    20,763.40x = 31,126.58 × 7,612.70
  4. Step 4: Simplify right side
    20,763.40x = 236,957,277.50
  5. Step 5: Solve for x
    x = 236,957,277.50/20,763.40
  6. Step 6: Final answer
    x = 11,412.26

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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.