Home / 18,931.68-26,126.64-10,972.48

Finding the Fourth Proportional to 18,931.68, 26,126.64 and 10,972.48

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Solution

The fourth proportional to 18,931.68, 26,126.64 and 10,972.48 is: 15,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.68 : 26,126.64 = 10,972.48 : x
  2. Step 2: Convert to fraction form
    18,931.68/26,126.64 = 10,972.48/x
  3. Step 3: Cross multiply
    18,931.68x = 26,126.64 × 10,972.48
  4. Step 4: Simplify right side
    18,931.68x = 286,674,034.87
  5. Step 5: Solve for x
    x = 286,674,034.87/18,931.68
  6. Step 6: Final answer
    x = 15,142.56

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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.