Home / 15,188.84-20,953.45-9,881.72

Finding the Fourth Proportional to 15,188.84, 20,953.45 and 9,881.72

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Solution

The fourth proportional to 15,188.84, 20,953.45 and 9,881.72 is: 13,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.84 : 20,953.45 = 9,881.72 : x
  2. Step 2: Convert to fraction form
    15,188.84/20,953.45 = 9,881.72/x
  3. Step 3: Cross multiply
    15,188.84x = 20,953.45 × 9,881.72
  4. Step 4: Simplify right side
    15,188.84x = 207,056,125.93
  5. Step 5: Solve for x
    x = 207,056,125.93/15,188.84
  6. Step 6: Final answer
    x = 13,632.12

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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.