Home / 28,080.90-42,121.35-7,304.40

Finding the Fourth Proportional to 28,080.90, 42,121.35 and 7,304.40

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Solution

The fourth proportional to 28,080.90, 42,121.35 and 7,304.40 is: 10,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.90 : 42,121.35 = 7,304.40 : x
  2. Step 2: Convert to fraction form
    28,080.90/42,121.35 = 7,304.40/x
  3. Step 3: Cross multiply
    28,080.90x = 42,121.35 × 7,304.40
  4. Step 4: Simplify right side
    28,080.90x = 307,671,188.94
  5. Step 5: Solve for x
    x = 307,671,188.94/28,080.90
  6. Step 6: Final answer
    x = 10,956.60

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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.