Home / 28,561.18-39,408.93-18,488.22

Finding the Fourth Proportional to 28,561.18, 39,408.93 and 18,488.22

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Solution

The fourth proportional to 28,561.18, 39,408.93 and 18,488.22 is: 25,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.18 : 39,408.93 = 18,488.22 : x
  2. Step 2: Convert to fraction form
    28,561.18/39,408.93 = 18,488.22/x
  3. Step 3: Cross multiply
    28,561.18x = 39,408.93 × 18,488.22
  4. Step 4: Simplify right side
    28,561.18x = 728,600,967.80
  5. Step 5: Solve for x
    x = 728,600,967.80/28,561.18
  6. Step 6: Final answer
    x = 25,510.18

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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.