Home / 15,211.32-21,000.48-10,110.96

Finding the Fourth Proportional to 15,211.32, 21,000.48 and 10,110.96

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Solution

The fourth proportional to 15,211.32, 21,000.48 and 10,110.96 is: 13,959.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.32 : 21,000.48 = 10,110.96 : x
  2. Step 2: Convert to fraction form
    15,211.32/21,000.48 = 10,110.96/x
  3. Step 3: Cross multiply
    15,211.32x = 21,000.48 × 10,110.96
  4. Step 4: Simplify right side
    15,211.32x = 212,335,013.26
  5. Step 5: Solve for x
    x = 212,335,013.26/15,211.32
  6. Step 6: Final answer
    x = 13,959.01

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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.