Home / 28,518.28-42,781.67-11,868.83

Finding the Fourth Proportional to 28,518.28, 42,781.67 and 11,868.83

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Solution

The fourth proportional to 28,518.28, 42,781.67 and 11,868.83 is: 17,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.28 : 42,781.67 = 11,868.83 : x
  2. Step 2: Convert to fraction form
    28,518.28/42,781.67 = 11,868.83/x
  3. Step 3: Cross multiply
    28,518.28x = 42,781.67 × 11,868.83
  4. Step 4: Simplify right side
    28,518.28x = 507,768,300.03
  5. Step 5: Solve for x
    x = 507,768,300.03/28,518.28
  6. Step 6: Final answer
    x = 17,805.01

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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.