Home / 15,521.95-21,408.85-9,851.83

Finding the Fourth Proportional to 15,521.95, 21,408.85 and 9,851.83

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Solution

The fourth proportional to 15,521.95, 21,408.85 and 9,851.83 is: 13,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.95 : 21,408.85 = 9,851.83 : x
  2. Step 2: Convert to fraction form
    15,521.95/21,408.85 = 9,851.83/x
  3. Step 3: Cross multiply
    15,521.95x = 21,408.85 × 9,851.83
  4. Step 4: Simplify right side
    15,521.95x = 210,916,350.70
  5. Step 5: Solve for x
    x = 210,916,350.70/15,521.95
  6. Step 6: Final answer
    x = 13,588.26

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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.