Home / 13,424.10-18,524.40-7,455.78

Finding the Fourth Proportional to 13,424.10, 18,524.40 and 7,455.78

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Solution

The fourth proportional to 13,424.10, 18,524.40 and 7,455.78 is: 10,288.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.10 : 18,524.40 = 7,455.78 : x
  2. Step 2: Convert to fraction form
    13,424.10/18,524.40 = 7,455.78/x
  3. Step 3: Cross multiply
    13,424.10x = 18,524.40 × 7,455.78
  4. Step 4: Simplify right side
    13,424.10x = 138,113,823.07
  5. Step 5: Solve for x
    x = 138,113,823.07/13,424.10
  6. Step 6: Final answer
    x = 10,288.50

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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.