Home / 13,353.08-18,427.78-8,869.10

Finding the Fourth Proportional to 13,353.08, 18,427.78 and 8,869.10

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Solution

The fourth proportional to 13,353.08, 18,427.78 and 8,869.10 is: 12,239.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.08 : 18,427.78 = 8,869.10 : x
  2. Step 2: Convert to fraction form
    13,353.08/18,427.78 = 8,869.10/x
  3. Step 3: Cross multiply
    13,353.08x = 18,427.78 × 8,869.10
  4. Step 4: Simplify right side
    13,353.08x = 163,437,823.60
  5. Step 5: Solve for x
    x = 163,437,823.60/13,353.08
  6. Step 6: Final answer
    x = 12,239.71

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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.