Home / 13,515.53-20,374.67-12,612.38

Finding the Fourth Proportional to 13,515.53, 20,374.67 and 12,612.38

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Solution

The fourth proportional to 13,515.53, 20,374.67 and 12,612.38 is: 19,013.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.53 : 20,374.67 = 12,612.38 : x
  2. Step 2: Convert to fraction form
    13,515.53/20,374.67 = 12,612.38/x
  3. Step 3: Cross multiply
    13,515.53x = 20,374.67 × 12,612.38
  4. Step 4: Simplify right side
    13,515.53x = 256,973,010.07
  5. Step 5: Solve for x
    x = 256,973,010.07/13,515.53
  6. Step 6: Final answer
    x = 19,013.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.