Home / 18,931.50-26,126.34-10,976.22

Finding the Fourth Proportional to 18,931.50, 26,126.34 and 10,976.22

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Solution

The fourth proportional to 18,931.50, 26,126.34 and 10,976.22 is: 15,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.50 : 26,126.34 = 10,976.22 : x
  2. Step 2: Convert to fraction form
    18,931.50/26,126.34 = 10,976.22/x
  3. Step 3: Cross multiply
    18,931.50x = 26,126.34 × 10,976.22
  4. Step 4: Simplify right side
    18,931.50x = 286,768,455.63
  5. Step 5: Solve for x
    x = 286,768,455.63/18,931.50
  6. Step 6: Final answer
    x = 15,147.69

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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.