Home / 20,526.06-28,330.49-13,343.48

Finding the Fourth Proportional to 20,526.06, 28,330.49 and 13,343.48

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Solution

The fourth proportional to 20,526.06, 28,330.49 and 13,343.48 is: 18,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.06 : 28,330.49 = 13,343.48 : x
  2. Step 2: Convert to fraction form
    20,526.06/28,330.49 = 13,343.48/x
  3. Step 3: Cross multiply
    20,526.06x = 28,330.49 × 13,343.48
  4. Step 4: Simplify right side
    20,526.06x = 378,027,326.71
  5. Step 5: Solve for x
    x = 378,027,326.71/20,526.06
  6. Step 6: Final answer
    x = 18,416.95

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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.