Home / 28,887.48-39,870.06-18,269.88

Finding the Fourth Proportional to 28,887.48, 39,870.06 and 18,269.88

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Solution

The fourth proportional to 28,887.48, 39,870.06 and 18,269.88 is: 25,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.48 : 39,870.06 = 18,269.88 : x
  2. Step 2: Convert to fraction form
    28,887.48/39,870.06 = 18,269.88/x
  3. Step 3: Cross multiply
    28,887.48x = 39,870.06 × 18,269.88
  4. Step 4: Simplify right side
    28,887.48x = 728,421,211.79
  5. Step 5: Solve for x
    x = 728,421,211.79/28,887.48
  6. Step 6: Final answer
    x = 25,215.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.