Home / 28,559.75-42,867.32-13,779.05

Finding the Fourth Proportional to 28,559.75, 42,867.32 and 13,779.05

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Solution

The fourth proportional to 28,559.75, 42,867.32 and 13,779.05 is: 20,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.75 : 42,867.32 = 13,779.05 : x
  2. Step 2: Convert to fraction form
    28,559.75/42,867.32 = 13,779.05/x
  3. Step 3: Cross multiply
    28,559.75x = 42,867.32 × 13,779.05
  4. Step 4: Simplify right side
    28,559.75x = 590,670,983.92
  5. Step 5: Solve for x
    x = 590,670,983.92/28,559.75
  6. Step 6: Final answer
    x = 20,681.94

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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.