Home / 13,148.57-18,159.78-8,692.55

Finding the Fourth Proportional to 13,148.57, 18,159.78 and 8,692.55

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Solution

The fourth proportional to 13,148.57, 18,159.78 and 8,692.55 is: 12,005.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.57 : 18,159.78 = 8,692.55 : x
  2. Step 2: Convert to fraction form
    13,148.57/18,159.78 = 8,692.55/x
  3. Step 3: Cross multiply
    13,148.57x = 18,159.78 × 8,692.55
  4. Step 4: Simplify right side
    13,148.57x = 157,854,795.64
  5. Step 5: Solve for x
    x = 157,854,795.64/13,148.57
  6. Step 6: Final answer
    x = 12,005.47

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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.