Home / 13,557.63-18,699.89-12,442.17

Finding the Fourth Proportional to 13,557.63, 18,699.89 and 12,442.17

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Solution

The fourth proportional to 13,557.63, 18,699.89 and 12,442.17 is: 17,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.63 : 18,699.89 = 12,442.17 : x
  2. Step 2: Convert to fraction form
    13,557.63/18,699.89 = 12,442.17/x
  3. Step 3: Cross multiply
    13,557.63x = 18,699.89 × 12,442.17
  4. Step 4: Simplify right side
    13,557.63x = 232,667,148.15
  5. Step 5: Solve for x
    x = 232,667,148.15/13,557.63
  6. Step 6: Final answer
    x = 17,161.34

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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.