Home / 28,539.93-42,816.28-13,761.28

Finding the Fourth Proportional to 28,539.93, 42,816.28 and 13,761.28

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Solution

The fourth proportional to 28,539.93, 42,816.28 and 13,761.28 is: 20,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.93 : 42,816.28 = 13,761.28 : x
  2. Step 2: Convert to fraction form
    28,539.93/42,816.28 = 13,761.28/x
  3. Step 3: Cross multiply
    28,539.93x = 42,816.28 × 13,761.28
  4. Step 4: Simplify right side
    28,539.93x = 589,206,817.64
  5. Step 5: Solve for x
    x = 589,206,817.64/28,539.93
  6. Step 6: Final answer
    x = 20,645.00

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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.