Home / 21,117.53-31,717.31-15,548.88

Finding the Fourth Proportional to 21,117.53, 31,717.31 and 15,548.88

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Solution

The fourth proportional to 21,117.53, 31,717.31 and 15,548.88 is: 23,353.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.53 : 31,717.31 = 15,548.88 : x
  2. Step 2: Convert to fraction form
    21,117.53/31,717.31 = 15,548.88/x
  3. Step 3: Cross multiply
    21,117.53x = 31,717.31 × 15,548.88
  4. Step 4: Simplify right side
    21,117.53x = 493,168,688.31
  5. Step 5: Solve for x
    x = 493,168,688.31/21,117.53
  6. Step 6: Final answer
    x = 23,353.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.