Home / 15,444.51-21,403.11-15,149.13

Finding the Fourth Proportional to 15,444.51, 21,403.11 and 15,149.13

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Solution

The fourth proportional to 15,444.51, 21,403.11 and 15,149.13 is: 20,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.51 : 21,403.11 = 15,149.13 : x
  2. Step 2: Convert to fraction form
    15,444.51/21,403.11 = 15,149.13/x
  3. Step 3: Cross multiply
    15,444.51x = 21,403.11 × 15,149.13
  4. Step 4: Simplify right side
    15,444.51x = 324,238,495.79
  5. Step 5: Solve for x
    x = 324,238,495.79/15,444.51
  6. Step 6: Final answer
    x = 20,993.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.