Home / 15,390.24-21,237.25-8,677.51

Finding the Fourth Proportional to 15,390.24, 21,237.25 and 8,677.51

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Solution

The fourth proportional to 15,390.24, 21,237.25 and 8,677.51 is: 11,974.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390.24 : 21,237.25 = 8,677.51 : x
  2. Step 2: Convert to fraction form
    15,390.24/21,237.25 = 8,677.51/x
  3. Step 3: Cross multiply
    15,390.24x = 21,237.25 × 8,677.51
  4. Step 4: Simplify right side
    15,390.24x = 184,286,449.25
  5. Step 5: Solve for x
    x = 184,286,449.25/15,390.24
  6. Step 6: Final answer
    x = 11,974.24

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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.