Home / 18,820.05-25,971.28-10,436.55

Finding the Fourth Proportional to 18,820.05, 25,971.28 and 10,436.55

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Solution

The fourth proportional to 18,820.05, 25,971.28 and 10,436.55 is: 14,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.05 : 25,971.28 = 10,436.55 : x
  2. Step 2: Convert to fraction form
    18,820.05/25,971.28 = 10,436.55/x
  3. Step 3: Cross multiply
    18,820.05x = 25,971.28 × 10,436.55
  4. Step 4: Simplify right side
    18,820.05x = 271,050,497.51
  5. Step 5: Solve for x
    x = 271,050,497.51/18,820.05
  6. Step 6: Final answer
    x = 14,402.22

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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.