Home / 13,927.84-19,217.76-7,961.40

Finding the Fourth Proportional to 13,927.84, 19,217.76 and 7,961.40

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Solution

The fourth proportional to 13,927.84, 19,217.76 and 7,961.40 is: 10,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.84 : 19,217.76 = 7,961.40 : x
  2. Step 2: Convert to fraction form
    13,927.84/19,217.76 = 7,961.40/x
  3. Step 3: Cross multiply
    13,927.84x = 19,217.76 × 7,961.40
  4. Step 4: Simplify right side
    13,927.84x = 153,000,274.46
  5. Step 5: Solve for x
    x = 153,000,274.46/13,927.84
  6. Step 6: Final answer
    x = 10,985.21

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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.