Home / 28,280.61-42,420.93-7,222.23

Finding the Fourth Proportional to 28,280.61, 42,420.93 and 7,222.23

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Solution

The fourth proportional to 28,280.61, 42,420.93 and 7,222.23 is: 10,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.61 : 42,420.93 = 7,222.23 : x
  2. Step 2: Convert to fraction form
    28,280.61/42,420.93 = 7,222.23/x
  3. Step 3: Cross multiply
    28,280.61x = 42,420.93 × 7,222.23
  4. Step 4: Simplify right side
    28,280.61x = 306,373,713.27
  5. Step 5: Solve for x
    x = 306,373,713.27/28,280.61
  6. Step 6: Final answer
    x = 10,833.35

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Half scale
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Double scale
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Similar ratio
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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.