Home / 15,359.09-21,172.50-12,522.11

Finding the Fourth Proportional to 15,359.09, 21,172.50 and 12,522.11

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Solution

The fourth proportional to 15,359.09, 21,172.50 and 12,522.11 is: 17,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.09 : 21,172.50 = 12,522.11 : x
  2. Step 2: Convert to fraction form
    15,359.09/21,172.50 = 12,522.11/x
  3. Step 3: Cross multiply
    15,359.09x = 21,172.50 × 12,522.11
  4. Step 4: Simplify right side
    15,359.09x = 265,124,268.11
  5. Step 5: Solve for x
    x = 265,124,268.11/15,359.09
  6. Step 6: Final answer
    x = 17,261.72

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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.