Home / 28,127.44-42,178.85-13,340.58

Finding the Fourth Proportional to 28,127.44, 42,178.85 and 13,340.58

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Solution

The fourth proportional to 28,127.44, 42,178.85 and 13,340.58 is: 20,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.44 : 42,178.85 = 13,340.58 : x
  2. Step 2: Convert to fraction form
    28,127.44/42,178.85 = 13,340.58/x
  3. Step 3: Cross multiply
    28,127.44x = 42,178.85 × 13,340.58
  4. Step 4: Simplify right side
    28,127.44x = 562,690,256.03
  5. Step 5: Solve for x
    x = 562,690,256.03/28,127.44
  6. Step 6: Final answer
    x = 20,005.03

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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.