Home / 18,975.78-26,186.28-10,478.76

Finding the Fourth Proportional to 18,975.78, 26,186.28 and 10,478.76

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Solution

The fourth proportional to 18,975.78, 26,186.28 and 10,478.76 is: 14,460.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.78 : 26,186.28 = 10,478.76 : x
  2. Step 2: Convert to fraction form
    18,975.78/26,186.28 = 10,478.76/x
  3. Step 3: Cross multiply
    18,975.78x = 26,186.28 × 10,478.76
  4. Step 4: Simplify right side
    18,975.78x = 274,399,743.41
  5. Step 5: Solve for x
    x = 274,399,743.41/18,975.78
  6. Step 6: Final answer
    x = 14,460.53

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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.