Home / 13,967.85-19,275.57-7,680.21

Finding the Fourth Proportional to 13,967.85, 19,275.57 and 7,680.21

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Solution

The fourth proportional to 13,967.85, 19,275.57 and 7,680.21 is: 10,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,967.85 : 19,275.57 = 7,680.21 : x
  2. Step 2: Convert to fraction form
    13,967.85/19,275.57 = 7,680.21/x
  3. Step 3: Cross multiply
    13,967.85x = 19,275.57 × 7,680.21
  4. Step 4: Simplify right side
    13,967.85x = 148,040,425.47
  5. Step 5: Solve for x
    x = 148,040,425.47/13,967.85
  6. Step 6: Final answer
    x = 10,598.66

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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.