Home / 15,348.12-21,180.30-8,724.12

Finding the Fourth Proportional to 15,348.12, 21,180.30 and 8,724.12

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Solution

The fourth proportional to 15,348.12, 21,180.30 and 8,724.12 is: 12,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.12 : 21,180.30 = 8,724.12 : x
  2. Step 2: Convert to fraction form
    15,348.12/21,180.30 = 8,724.12/x
  3. Step 3: Cross multiply
    15,348.12x = 21,180.30 × 8,724.12
  4. Step 4: Simplify right side
    15,348.12x = 184,779,478.84
  5. Step 5: Solve for x
    x = 184,779,478.84/15,348.12
  6. Step 6: Final answer
    x = 12,039.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.