Home / 28,657.92-42,988.04-7,311.19

Finding the Fourth Proportional to 28,657.92, 42,988.04 and 7,311.19

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Solution

The fourth proportional to 28,657.92, 42,988.04 and 7,311.19 is: 10,967.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.92 : 42,988.04 = 7,311.19 : x
  2. Step 2: Convert to fraction form
    28,657.92/42,988.04 = 7,311.19/x
  3. Step 3: Cross multiply
    28,657.92x = 42,988.04 × 7,311.19
  4. Step 4: Simplify right side
    28,657.92x = 314,293,728.17
  5. Step 5: Solve for x
    x = 314,293,728.17/28,657.92
  6. Step 6: Final answer
    x = 10,967.08

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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.