Home / 20,959.04-28,923-11,527.40

Finding the Fourth Proportional to 20,959.04, 28,923 and 11,527.40

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Solution

The fourth proportional to 20,959.04, 28,923 and 11,527.40 is: 15,907.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.04 : 28,923 = 11,527.40 : x
  2. Step 2: Convert to fraction form
    20,959.04/28,923 = 11,527.40/x
  3. Step 3: Cross multiply
    20,959.04x = 28,923 × 11,527.40
  4. Step 4: Simplify right side
    20,959.04x = 333,406,990.20
  5. Step 5: Solve for x
    x = 333,406,990.20/20,959.04
  6. Step 6: Final answer
    x = 15,907.55

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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.