Home / 28,987.04-43,406.14-20,089.68

Finding the Fourth Proportional to 28,987.04, 43,406.14 and 20,089.68

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Solution

The fourth proportional to 28,987.04, 43,406.14 and 20,089.68 is: 30,082.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.04 : 43,406.14 = 20,089.68 : x
  2. Step 2: Convert to fraction form
    28,987.04/43,406.14 = 20,089.68/x
  3. Step 3: Cross multiply
    28,987.04x = 43,406.14 × 20,089.68
  4. Step 4: Simplify right side
    28,987.04x = 872,015,462.64
  5. Step 5: Solve for x
    x = 872,015,462.64/28,987.04
  6. Step 6: Final answer
    x = 30,082.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.