Home / 20,597.68-28,409.70-13,521.52

Finding the Fourth Proportional to 20,597.68, 28,409.70 and 13,521.52

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Solution

The fourth proportional to 20,597.68, 28,409.70 and 13,521.52 is: 18,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.68 : 28,409.70 = 13,521.52 : x
  2. Step 2: Convert to fraction form
    20,597.68/28,409.70 = 13,521.52/x
  3. Step 3: Cross multiply
    20,597.68x = 28,409.70 × 13,521.52
  4. Step 4: Simplify right side
    20,597.68x = 384,142,326.74
  5. Step 5: Solve for x
    x = 384,142,326.74/20,597.68
  6. Step 6: Final answer
    x = 18,649.79

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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.