Home / 18,955.30-28,438.14-5,807.38

Finding the Fourth Proportional to 18,955.30, 28,438.14 and 5,807.38

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Solution

The fourth proportional to 18,955.30, 28,438.14 and 5,807.38 is: 8,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.30 : 28,438.14 = 5,807.38 : x
  2. Step 2: Convert to fraction form
    18,955.30/28,438.14 = 5,807.38/x
  3. Step 3: Cross multiply
    18,955.30x = 28,438.14 × 5,807.38
  4. Step 4: Simplify right side
    18,955.30x = 165,151,085.47
  5. Step 5: Solve for x
    x = 165,151,085.47/18,955.30
  6. Step 6: Final answer
    x = 8,712.66

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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.