Home / 15,749.60-21,735.68-8,677.29

Finding the Fourth Proportional to 15,749.60, 21,735.68 and 8,677.29

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Solution

The fourth proportional to 15,749.60, 21,735.68 and 8,677.29 is: 11,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.60 : 21,735.68 = 8,677.29 : x
  2. Step 2: Convert to fraction form
    15,749.60/21,735.68 = 8,677.29/x
  3. Step 3: Cross multiply
    15,749.60x = 21,735.68 × 8,677.29
  4. Step 4: Simplify right side
    15,749.60x = 188,606,798.71
  5. Step 5: Solve for x
    x = 188,606,798.71/15,749.60
  6. Step 6: Final answer
    x = 11,975.34

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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.