Home / 21,247.79-31,859.84-8,776.26

Finding the Fourth Proportional to 21,247.79, 31,859.84 and 8,776.26

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Solution

The fourth proportional to 21,247.79, 31,859.84 and 8,776.26 is: 13,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.79 : 31,859.84 = 8,776.26 : x
  2. Step 2: Convert to fraction form
    21,247.79/31,859.84 = 8,776.26/x
  3. Step 3: Cross multiply
    21,247.79x = 31,859.84 × 8,776.26
  4. Step 4: Simplify right side
    21,247.79x = 279,610,261.34
  5. Step 5: Solve for x
    x = 279,610,261.34/21,247.79
  6. Step 6: Final answer
    x = 13,159.50

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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.