Home / 13,911.84-20,867.76-6,521.49

Finding the Fourth Proportional to 13,911.84, 20,867.76 and 6,521.49

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Solution

The fourth proportional to 13,911.84, 20,867.76 and 6,521.49 is: 9,782.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.84 : 20,867.76 = 6,521.49 : x
  2. Step 2: Convert to fraction form
    13,911.84/20,867.76 = 6,521.49/x
  3. Step 3: Cross multiply
    13,911.84x = 20,867.76 × 6,521.49
  4. Step 4: Simplify right side
    13,911.84x = 136,088,888.16
  5. Step 5: Solve for x
    x = 136,088,888.16/13,911.84
  6. Step 6: Final answer
    x = 9,782.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.