Home / 18,998.15-26,212.10-10,931.37

Finding the Fourth Proportional to 18,998.15, 26,212.10 and 10,931.37

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Solution

The fourth proportional to 18,998.15, 26,212.10 and 10,931.37 is: 15,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.15 : 26,212.10 = 10,931.37 : x
  2. Step 2: Convert to fraction form
    18,998.15/26,212.10 = 10,931.37/x
  3. Step 3: Cross multiply
    18,998.15x = 26,212.10 × 10,931.37
  4. Step 4: Simplify right side
    18,998.15x = 286,534,108.92
  5. Step 5: Solve for x
    x = 286,534,108.92/18,998.15
  6. Step 6: Final answer
    x = 15,082.22

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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.