Home / 28,115.58-38,784.15-18,032.81

Finding the Fourth Proportional to 28,115.58, 38,784.15 and 18,032.81

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Solution

The fourth proportional to 28,115.58, 38,784.15 and 18,032.81 is: 24,875.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.58 : 38,784.15 = 18,032.81 : x
  2. Step 2: Convert to fraction form
    28,115.58/38,784.15 = 18,032.81/x
  3. Step 3: Cross multiply
    28,115.58x = 38,784.15 × 18,032.81
  4. Step 4: Simplify right side
    28,115.58x = 699,387,014.04
  5. Step 5: Solve for x
    x = 699,387,014.04/28,115.58
  6. Step 6: Final answer
    x = 24,875.42

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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.