Home / 13,325.78-18,389.47-7,357.46

Finding the Fourth Proportional to 13,325.78, 18,389.47 and 7,357.46

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Solution

The fourth proportional to 13,325.78, 18,389.47 and 7,357.46 is: 10,153.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.78 : 18,389.47 = 7,357.46 : x
  2. Step 2: Convert to fraction form
    13,325.78/18,389.47 = 7,357.46/x
  3. Step 3: Cross multiply
    13,325.78x = 18,389.47 × 7,357.46
  4. Step 4: Simplify right side
    13,325.78x = 135,299,789.95
  5. Step 5: Solve for x
    x = 135,299,789.95/13,325.78
  6. Step 6: Final answer
    x = 10,153.24

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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.