Home / 13,256.70-18,294.03-7,878.30

Finding the Fourth Proportional to 13,256.70, 18,294.03 and 7,878.30

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Solution

The fourth proportional to 13,256.70, 18,294.03 and 7,878.30 is: 10,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.70 : 18,294.03 = 7,878.30 : x
  2. Step 2: Convert to fraction form
    13,256.70/18,294.03 = 7,878.30/x
  3. Step 3: Cross multiply
    13,256.70x = 18,294.03 × 7,878.30
  4. Step 4: Simplify right side
    13,256.70x = 144,125,856.55
  5. Step 5: Solve for x
    x = 144,125,856.55/13,256.70
  6. Step 6: Final answer
    x = 10,871.93

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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.