Home / 28,290.14-42,437.40-8,570.30

Finding the Fourth Proportional to 28,290.14, 42,437.40 and 8,570.30

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Solution

The fourth proportional to 28,290.14, 42,437.40 and 8,570.30 is: 12,856.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.14 : 42,437.40 = 8,570.30 : x
  2. Step 2: Convert to fraction form
    28,290.14/42,437.40 = 8,570.30/x
  3. Step 3: Cross multiply
    28,290.14x = 42,437.40 × 8,570.30
  4. Step 4: Simplify right side
    28,290.14x = 363,701,249.22
  5. Step 5: Solve for x
    x = 363,701,249.22/28,290.14
  6. Step 6: Final answer
    x = 12,856.11

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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.