Home / 21,248.79-31,861.34-8,777.26

Finding the Fourth Proportional to 21,248.79, 31,861.34 and 8,777.26

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Solution

The fourth proportional to 21,248.79, 31,861.34 and 8,777.26 is: 13,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.79 : 31,861.34 = 8,777.26 : x
  2. Step 2: Convert to fraction form
    21,248.79/31,861.34 = 8,777.26/x
  3. Step 3: Cross multiply
    21,248.79x = 31,861.34 × 8,777.26
  4. Step 4: Simplify right side
    21,248.79x = 279,655,265.13
  5. Step 5: Solve for x
    x = 279,655,265.13/21,248.79
  6. Step 6: Final answer
    x = 13,161.00

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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.