Home / 28,560.13-42,867.87-13,779.42

Finding the Fourth Proportional to 28,560.13, 42,867.87 and 13,779.42

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Solution

The fourth proportional to 28,560.13, 42,867.87 and 13,779.42 is: 20,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.13 : 42,867.87 = 13,779.42 : x
  2. Step 2: Convert to fraction form
    28,560.13/42,867.87 = 13,779.42/x
  3. Step 3: Cross multiply
    28,560.13x = 42,867.87 × 13,779.42
  4. Step 4: Simplify right side
    28,560.13x = 590,694,172.81
  5. Step 5: Solve for x
    x = 590,694,172.81/28,560.13
  6. Step 6: Final answer
    x = 20,682.48

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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.