Home / 28,437.06-42,678.78-20,125.08

Finding the Fourth Proportional to 28,437.06, 42,678.78 and 20,125.08

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Solution

The fourth proportional to 28,437.06, 42,678.78 and 20,125.08 is: 30,204.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.06 : 42,678.78 = 20,125.08 : x
  2. Step 2: Convert to fraction form
    28,437.06/42,678.78 = 20,125.08/x
  3. Step 3: Cross multiply
    28,437.06x = 42,678.78 × 20,125.08
  4. Step 4: Simplify right side
    28,437.06x = 858,913,861.80
  5. Step 5: Solve for x
    x = 858,913,861.80/28,437.06
  6. Step 6: Final answer
    x = 30,204.03

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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.