Home / 28,015.66-42,023.76-13,182.40

Finding the Fourth Proportional to 28,015.66, 42,023.76 and 13,182.40

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Solution

The fourth proportional to 28,015.66, 42,023.76 and 13,182.40 is: 19,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.66 : 42,023.76 = 13,182.40 : x
  2. Step 2: Convert to fraction form
    28,015.66/42,023.76 = 13,182.40/x
  3. Step 3: Cross multiply
    28,015.66x = 42,023.76 × 13,182.40
  4. Step 4: Simplify right side
    28,015.66x = 553,974,013.82
  5. Step 5: Solve for x
    x = 553,974,013.82/28,015.66
  6. Step 6: Final answer
    x = 19,773.73

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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.