Home / 20,908.95-31,360.59-5,326.58

Finding the Fourth Proportional to 20,908.95, 31,360.59 and 5,326.58

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Solution

The fourth proportional to 20,908.95, 31,360.59 and 5,326.58 is: 7,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.95 : 31,360.59 = 5,326.58 : x
  2. Step 2: Convert to fraction form
    20,908.95/31,360.59 = 5,326.58/x
  3. Step 3: Cross multiply
    20,908.95x = 31,360.59 × 5,326.58
  4. Step 4: Simplify right side
    20,908.95x = 167,044,534.68
  5. Step 5: Solve for x
    x = 167,044,534.68/20,908.95
  6. Step 6: Final answer
    x = 7,989.14

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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.