Home / 15,822.90-21,835.17-8,749.08

Finding the Fourth Proportional to 15,822.90, 21,835.17 and 8,749.08

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Solution

The fourth proportional to 15,822.90, 21,835.17 and 8,749.08 is: 12,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.90 : 21,835.17 = 8,749.08 : x
  2. Step 2: Convert to fraction form
    15,822.90/21,835.17 = 8,749.08/x
  3. Step 3: Cross multiply
    15,822.90x = 21,835.17 × 8,749.08
  4. Step 4: Simplify right side
    15,822.90x = 191,037,649.14
  5. Step 5: Solve for x
    x = 191,037,649.14/15,822.90
  6. Step 6: Final answer
    x = 12,073.49

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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.