Home / 28,351.81-42,436.76-18,842.31

Finding the Fourth Proportional to 28,351.81, 42,436.76 and 18,842.31

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Solution

The fourth proportional to 28,351.81, 42,436.76 and 18,842.31 is: 28,203.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.81 : 42,436.76 = 18,842.31 : x
  2. Step 2: Convert to fraction form
    28,351.81/42,436.76 = 18,842.31/x
  3. Step 3: Cross multiply
    28,351.81x = 42,436.76 × 18,842.31
  4. Step 4: Simplify right side
    28,351.81x = 799,606,587.32
  5. Step 5: Solve for x
    x = 799,606,587.32/28,351.81
  6. Step 6: Final answer
    x = 28,203.02

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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.