Home / 13,650.08-18,836.30-7,681.39

Finding the Fourth Proportional to 13,650.08, 18,836.30 and 7,681.39

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Solution

The fourth proportional to 13,650.08, 18,836.30 and 7,681.39 is: 10,599.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.08 : 18,836.30 = 7,681.39 : x
  2. Step 2: Convert to fraction form
    13,650.08/18,836.30 = 7,681.39/x
  3. Step 3: Cross multiply
    13,650.08x = 18,836.30 × 7,681.39
  4. Step 4: Simplify right side
    13,650.08x = 144,688,938.57
  5. Step 5: Solve for x
    x = 144,688,938.57/13,650.08
  6. Step 6: Final answer
    x = 10,599.86

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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.