Home / 28,577.99-42,870.63-8,857.73

Finding the Fourth Proportional to 28,577.99, 42,870.63 and 8,857.73

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Solution

The fourth proportional to 28,577.99, 42,870.63 and 8,857.73 is: 13,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.99 : 42,870.63 = 8,857.73 : x
  2. Step 2: Convert to fraction form
    28,577.99/42,870.63 = 8,857.73/x
  3. Step 3: Cross multiply
    28,577.99x = 42,870.63 × 8,857.73
  4. Step 4: Simplify right side
    28,577.99x = 379,736,465.47
  5. Step 5: Solve for x
    x = 379,736,465.47/28,577.99
  6. Step 6: Final answer
    x = 13,287.72

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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.