Home / 15,293.15-21,105.60-8,487.51

Finding the Fourth Proportional to 15,293.15, 21,105.60 and 8,487.51

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Solution

The fourth proportional to 15,293.15, 21,105.60 and 8,487.51 is: 11,713.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.15 : 21,105.60 = 8,487.51 : x
  2. Step 2: Convert to fraction form
    15,293.15/21,105.60 = 8,487.51/x
  3. Step 3: Cross multiply
    15,293.15x = 21,105.60 × 8,487.51
  4. Step 4: Simplify right side
    15,293.15x = 179,133,991.06
  5. Step 5: Solve for x
    x = 179,133,991.06/15,293.15
  6. Step 6: Final answer
    x = 11,713.35

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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.