Home / 15,600.76-21,529.47-9,316.78

Finding the Fourth Proportional to 15,600.76, 21,529.47 and 9,316.78

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Solution

The fourth proportional to 15,600.76, 21,529.47 and 9,316.78 is: 12,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,600.76 : 21,529.47 = 9,316.78 : x
  2. Step 2: Convert to fraction form
    15,600.76/21,529.47 = 9,316.78/x
  3. Step 3: Cross multiply
    15,600.76x = 21,529.47 × 9,316.78
  4. Step 4: Simplify right side
    15,600.76x = 200,585,335.51
  5. Step 5: Solve for x
    x = 200,585,335.51/15,600.76
  6. Step 6: Final answer
    x = 12,857.41

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Half scale
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Double scale
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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.