Home / 15,586.72-21,510.30-8,513.44

Finding the Fourth Proportional to 15,586.72, 21,510.30 and 8,513.44

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Solution

The fourth proportional to 15,586.72, 21,510.30 and 8,513.44 is: 11,748.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.72 : 21,510.30 = 8,513.44 : x
  2. Step 2: Convert to fraction form
    15,586.72/21,510.30 = 8,513.44/x
  3. Step 3: Cross multiply
    15,586.72x = 21,510.30 × 8,513.44
  4. Step 4: Simplify right side
    15,586.72x = 183,126,648.43
  5. Step 5: Solve for x
    x = 183,126,648.43/15,586.72
  6. Step 6: Final answer
    x = 11,748.89

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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.