Home / 28,085.18-42,103.08-11,459.21

Finding the Fourth Proportional to 28,085.18, 42,103.08 and 11,459.21

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Solution

The fourth proportional to 28,085.18, 42,103.08 and 11,459.21 is: 17,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.18 : 42,103.08 = 11,459.21 : x
  2. Step 2: Convert to fraction form
    28,085.18/42,103.08 = 11,459.21/x
  3. Step 3: Cross multiply
    28,085.18x = 42,103.08 × 11,459.21
  4. Step 4: Simplify right side
    28,085.18x = 482,467,824.85
  5. Step 5: Solve for x
    x = 482,467,824.85/28,085.18
  6. Step 6: Final answer
    x = 17,178.74

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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.