Home / 28,280.20-42,421.98-7,503.64

Finding the Fourth Proportional to 28,280.20, 42,421.98 and 7,503.64

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Solution

The fourth proportional to 28,280.20, 42,421.98 and 7,503.64 is: 11,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.20 : 42,421.98 = 7,503.64 : x
  2. Step 2: Convert to fraction form
    28,280.20/42,421.98 = 7,503.64/x
  3. Step 3: Cross multiply
    28,280.20x = 42,421.98 × 7,503.64
  4. Step 4: Simplify right side
    28,280.20x = 318,319,266.01
  5. Step 5: Solve for x
    x = 318,319,266.01/28,280.20
  6. Step 6: Final answer
    x = 11,255.91

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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.