Home / 15,319.50-21,149.55-11,587.02

Finding the Fourth Proportional to 15,319.50, 21,149.55 and 11,587.02

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Solution

The fourth proportional to 15,319.50, 21,149.55 and 11,587.02 is: 15,996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.50 : 21,149.55 = 11,587.02 : x
  2. Step 2: Convert to fraction form
    15,319.50/21,149.55 = 11,587.02/x
  3. Step 3: Cross multiply
    15,319.50x = 21,149.55 × 11,587.02
  4. Step 4: Simplify right side
    15,319.50x = 245,060,258.84
  5. Step 5: Solve for x
    x = 245,060,258.84/15,319.50
  6. Step 6: Final answer
    x = 15,996.62

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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.