Home / 20,641.04-28,474.20-13,074.68

Finding the Fourth Proportional to 20,641.04, 28,474.20 and 13,074.68

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Solution

The fourth proportional to 20,641.04, 28,474.20 and 13,074.68 is: 18,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.04 : 28,474.20 = 13,074.68 : x
  2. Step 2: Convert to fraction form
    20,641.04/28,474.20 = 13,074.68/x
  3. Step 3: Cross multiply
    20,641.04x = 28,474.20 × 13,074.68
  4. Step 4: Simplify right side
    20,641.04x = 372,291,053.26
  5. Step 5: Solve for x
    x = 372,291,053.26/20,641.04
  6. Step 6: Final answer
    x = 18,036.45

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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.