Home / 15,524.04-21,420.04-14,990.68

Finding the Fourth Proportional to 15,524.04, 21,420.04 and 14,990.68

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Solution

The fourth proportional to 15,524.04, 21,420.04 and 14,990.68 is: 20,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,524.04 : 21,420.04 = 14,990.68 : x
  2. Step 2: Convert to fraction form
    15,524.04/21,420.04 = 14,990.68/x
  3. Step 3: Cross multiply
    15,524.04x = 21,420.04 × 14,990.68
  4. Step 4: Simplify right side
    15,524.04x = 321,100,965.23
  5. Step 5: Solve for x
    x = 321,100,965.23/15,524.04
  6. Step 6: Final answer
    x = 20,684.11

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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.