Home / 15,586.80-21,510.30-8,513.88

Finding the Fourth Proportional to 15,586.80, 21,510.30 and 8,513.88

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Solution

The fourth proportional to 15,586.80, 21,510.30 and 8,513.88 is: 11,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.80 : 21,510.30 = 8,513.88 : x
  2. Step 2: Convert to fraction form
    15,586.80/21,510.30 = 8,513.88/x
  3. Step 3: Cross multiply
    15,586.80x = 21,510.30 × 8,513.88
  4. Step 4: Simplify right side
    15,586.80x = 183,136,112.96
  5. Step 5: Solve for x
    x = 183,136,112.96/15,586.80
  6. Step 6: Final answer
    x = 11,749.44

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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.