Home / 18,945.56-26,143.08-10,985.96

Finding the Fourth Proportional to 18,945.56, 26,143.08 and 10,985.96

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Solution

The fourth proportional to 18,945.56, 26,143.08 and 10,985.96 is: 15,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.56 : 26,143.08 = 10,985.96 : x
  2. Step 2: Convert to fraction form
    18,945.56/26,143.08 = 10,985.96/x
  3. Step 3: Cross multiply
    18,945.56x = 26,143.08 × 10,985.96
  4. Step 4: Simplify right side
    18,945.56x = 287,206,831.16
  5. Step 5: Solve for x
    x = 287,206,831.16/18,945.56
  6. Step 6: Final answer
    x = 15,159.59

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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.