Home / 18,938.11-26,133.04-10,980.82

Finding the Fourth Proportional to 18,938.11, 26,133.04 and 10,980.82

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Solution

The fourth proportional to 18,938.11, 26,133.04 and 10,980.82 is: 15,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.11 : 26,133.04 = 10,980.82 : x
  2. Step 2: Convert to fraction form
    18,938.11/26,133.04 = 10,980.82/x
  3. Step 3: Cross multiply
    18,938.11x = 26,133.04 × 10,980.82
  4. Step 4: Simplify right side
    18,938.11x = 286,962,208.29
  5. Step 5: Solve for x
    x = 286,962,208.29/18,938.11
  6. Step 6: Final answer
    x = 15,152.63

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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.