Home / 15,842.95-21,825.21-13,325.11

Finding the Fourth Proportional to 15,842.95, 21,825.21 and 13,325.11

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Solution

The fourth proportional to 15,842.95, 21,825.21 and 13,325.11 is: 18,356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,842.95 : 21,825.21 = 13,325.11 : x
  2. Step 2: Convert to fraction form
    15,842.95/21,825.21 = 13,325.11/x
  3. Step 3: Cross multiply
    15,842.95x = 21,825.21 × 13,325.11
  4. Step 4: Simplify right side
    15,842.95x = 290,823,324.02
  5. Step 5: Solve for x
    x = 290,823,324.02/15,842.95
  6. Step 6: Final answer
    x = 18,356.64

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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.