Home / 15,401.56-21,254.26-8,686.52

Finding the Fourth Proportional to 15,401.56, 21,254.26 and 8,686.52

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Solution

The fourth proportional to 15,401.56, 21,254.26 and 8,686.52 is: 11,987.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.56 : 21,254.26 = 8,686.52 : x
  2. Step 2: Convert to fraction form
    15,401.56/21,254.26 = 8,686.52/x
  3. Step 3: Cross multiply
    15,401.56x = 21,254.26 × 8,686.52
  4. Step 4: Simplify right side
    15,401.56x = 184,625,554.58
  5. Step 5: Solve for x
    x = 184,625,554.58/15,401.56
  6. Step 6: Final answer
    x = 11,987.46

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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.