Home / 28,133.83-38,823.11-15,384.47

Finding the Fourth Proportional to 28,133.83, 38,823.11 and 15,384.47

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Solution

The fourth proportional to 28,133.83, 38,823.11 and 15,384.47 is: 21,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.83 : 38,823.11 = 15,384.47 : x
  2. Step 2: Convert to fraction form
    28,133.83/38,823.11 = 15,384.47/x
  3. Step 3: Cross multiply
    28,133.83x = 38,823.11 × 15,384.47
  4. Step 4: Simplify right side
    28,133.83x = 597,272,971.10
  5. Step 5: Solve for x
    x = 597,272,971.10/28,133.83
  6. Step 6: Final answer
    x = 21,229.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.