Home / 13,880.72-19,156.08-8,218.70

Finding the Fourth Proportional to 13,880.72, 19,156.08 and 8,218.70

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Solution

The fourth proportional to 13,880.72, 19,156.08 and 8,218.70 is: 11,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.72 : 19,156.08 = 8,218.70 : x
  2. Step 2: Convert to fraction form
    13,880.72/19,156.08 = 8,218.70/x
  3. Step 3: Cross multiply
    13,880.72x = 19,156.08 × 8,218.70
  4. Step 4: Simplify right side
    13,880.72x = 157,438,074.70
  5. Step 5: Solve for x
    x = 157,438,074.70/13,880.72
  6. Step 6: Final answer
    x = 11,342.21

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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.