Home / 20,653.51-28,502.27-11,222.68

Finding the Fourth Proportional to 20,653.51, 28,502.27 and 11,222.68

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Solution

The fourth proportional to 20,653.51, 28,502.27 and 11,222.68 is: 15,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.51 : 28,502.27 = 11,222.68 : x
  2. Step 2: Convert to fraction form
    20,653.51/28,502.27 = 11,222.68/x
  3. Step 3: Cross multiply
    20,653.51x = 28,502.27 × 11,222.68
  4. Step 4: Simplify right side
    20,653.51x = 319,871,855.48
  5. Step 5: Solve for x
    x = 319,871,855.48/20,653.51
  6. Step 6: Final answer
    x = 15,487.53

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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.