Home / 21,854.07-30,151.58-12,904.56

Finding the Fourth Proportional to 21,854.07, 30,151.58 and 12,904.56

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Solution

The fourth proportional to 21,854.07, 30,151.58 and 12,904.56 is: 17,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.07 : 30,151.58 = 12,904.56 : x
  2. Step 2: Convert to fraction form
    21,854.07/30,151.58 = 12,904.56/x
  3. Step 3: Cross multiply
    21,854.07x = 30,151.58 × 12,904.56
  4. Step 4: Simplify right side
    21,854.07x = 389,092,808.68
  5. Step 5: Solve for x
    x = 389,092,808.68/21,854.07
  6. Step 6: Final answer
    x = 17,804.13

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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.