Home / 15,301.89-21,128.85-10,270.62

Finding the Fourth Proportional to 15,301.89, 21,128.85 and 10,270.62

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Solution

The fourth proportional to 15,301.89, 21,128.85 and 10,270.62 is: 14,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.89 : 21,128.85 = 10,270.62 : x
  2. Step 2: Convert to fraction form
    15,301.89/21,128.85 = 10,270.62/x
  3. Step 3: Cross multiply
    15,301.89x = 21,128.85 × 10,270.62
  4. Step 4: Simplify right side
    15,301.89x = 217,006,389.39
  5. Step 5: Solve for x
    x = 217,006,389.39/15,301.89
  6. Step 6: Final answer
    x = 14,181.67

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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.