Home / 28,102.28-42,187.38-13,123.64

Finding the Fourth Proportional to 28,102.28, 42,187.38 and 13,123.64

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Solution

The fourth proportional to 28,102.28, 42,187.38 and 13,123.64 is: 19,701.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.28 : 42,187.38 = 13,123.64 : x
  2. Step 2: Convert to fraction form
    28,102.28/42,187.38 = 13,123.64/x
  3. Step 3: Cross multiply
    28,102.28x = 42,187.38 × 13,123.64
  4. Step 4: Simplify right side
    28,102.28x = 553,651,987.66
  5. Step 5: Solve for x
    x = 553,651,987.66/28,102.28
  6. Step 6: Final answer
    x = 19,701.32

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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.