Home / 14,255.19-19,670.85-8,940.78

Finding the Fourth Proportional to 14,255.19, 19,670.85 and 8,940.78

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Solution

The fourth proportional to 14,255.19, 19,670.85 and 8,940.78 is: 12,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,255.19 : 19,670.85 = 8,940.78 : x
  2. Step 2: Convert to fraction form
    14,255.19/19,670.85 = 8,940.78/x
  3. Step 3: Cross multiply
    14,255.19x = 19,670.85 × 8,940.78
  4. Step 4: Simplify right side
    14,255.19x = 175,872,742.26
  5. Step 5: Solve for x
    x = 175,872,742.26/14,255.19
  6. Step 6: Final answer
    x = 12,337.45

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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.