Home / 28,039.50-42,019.08-13,240.80

Finding the Fourth Proportional to 28,039.50, 42,019.08 and 13,240.80

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Solution

The fourth proportional to 28,039.50, 42,019.08 and 13,240.80 is: 19,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.50 : 42,019.08 = 13,240.80 : x
  2. Step 2: Convert to fraction form
    28,039.50/42,019.08 = 13,240.80/x
  3. Step 3: Cross multiply
    28,039.50x = 42,019.08 × 13,240.80
  4. Step 4: Simplify right side
    28,039.50x = 556,366,234.46
  5. Step 5: Solve for x
    x = 556,366,234.46/28,039.50
  6. Step 6: Final answer
    x = 19,842.23

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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.