Home / 28,290.67-42,442.08-8,570.76

Finding the Fourth Proportional to 28,290.67, 42,442.08 and 8,570.76

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Solution

The fourth proportional to 28,290.67, 42,442.08 and 8,570.76 is: 12,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.67 : 42,442.08 = 8,570.76 : x
  2. Step 2: Convert to fraction form
    28,290.67/42,442.08 = 8,570.76/x
  3. Step 3: Cross multiply
    28,290.67x = 42,442.08 × 8,570.76
  4. Step 4: Simplify right side
    28,290.67x = 363,760,929.02
  5. Step 5: Solve for x
    x = 363,760,929.02/28,290.67
  6. Step 6: Final answer
    x = 12,857.98

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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.