Home / 28,018.59-38,665.65-15,443.34

Finding the Fourth Proportional to 28,018.59, 38,665.65 and 15,443.34

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Solution

The fourth proportional to 28,018.59, 38,665.65 and 15,443.34 is: 21,311.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.59 : 38,665.65 = 15,443.34 : x
  2. Step 2: Convert to fraction form
    28,018.59/38,665.65 = 15,443.34/x
  3. Step 3: Cross multiply
    28,018.59x = 38,665.65 × 15,443.34
  4. Step 4: Simplify right side
    28,018.59x = 597,126,779.27
  5. Step 5: Solve for x
    x = 597,126,779.27/28,018.59
  6. Step 6: Final answer
    x = 21,311.81

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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.