Home / 30,276.40-45,441.60-17,780.80

Finding the Fourth Proportional to 30,276.40, 45,441.60 and 17,780.80

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Solution

The fourth proportional to 30,276.40, 45,441.60 and 17,780.80 is: 26,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,276.40 : 45,441.60 = 17,780.80 : x
  2. Step 2: Convert to fraction form
    30,276.40/45,441.60 = 17,780.80/x
  3. Step 3: Cross multiply
    30,276.40x = 45,441.60 × 17,780.80
  4. Step 4: Simplify right side
    30,276.40x = 807,988,001.28
  5. Step 5: Solve for x
    x = 807,988,001.28/30,276.40
  6. Step 6: Final answer
    x = 26,687.06

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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.