Home / 21,931.74-30,265.74-11,860.11

Finding the Fourth Proportional to 21,931.74, 30,265.74 and 11,860.11

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Solution

The fourth proportional to 21,931.74, 30,265.74 and 11,860.11 is: 16,366.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.74 : 30,265.74 = 11,860.11 : x
  2. Step 2: Convert to fraction form
    21,931.74/30,265.74 = 11,860.11/x
  3. Step 3: Cross multiply
    21,931.74x = 30,265.74 × 11,860.11
  4. Step 4: Simplify right side
    21,931.74x = 358,955,005.63
  5. Step 5: Solve for x
    x = 358,955,005.63/21,931.74
  6. Step 6: Final answer
    x = 16,366.92

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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.