Home / 14,987.72-20,686.38-11,222.48

Finding the Fourth Proportional to 14,987.72, 20,686.38 and 11,222.48

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Solution

The fourth proportional to 14,987.72, 20,686.38 and 11,222.48 is: 15,489.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.72 : 20,686.38 = 11,222.48 : x
  2. Step 2: Convert to fraction form
    14,987.72/20,686.38 = 11,222.48/x
  3. Step 3: Cross multiply
    14,987.72x = 20,686.38 × 11,222.48
  4. Step 4: Simplify right side
    14,987.72x = 232,152,485.82
  5. Step 5: Solve for x
    x = 232,152,485.82/14,987.72
  6. Step 6: Final answer
    x = 15,489.51

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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.