Home / 15,211.83-21,001.96-10,439.76

Finding the Fourth Proportional to 15,211.83, 21,001.96 and 10,439.76

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Solution

The fourth proportional to 15,211.83, 21,001.96 and 10,439.76 is: 14,413.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.83 : 21,001.96 = 10,439.76 : x
  2. Step 2: Convert to fraction form
    15,211.83/21,001.96 = 10,439.76/x
  3. Step 3: Cross multiply
    15,211.83x = 21,001.96 × 10,439.76
  4. Step 4: Simplify right side
    15,211.83x = 219,255,421.93
  5. Step 5: Solve for x
    x = 219,255,421.93/15,211.83
  6. Step 6: Final answer
    x = 14,413.48

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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.