Home / 20,653.99-28,502.47-11,222.48

Finding the Fourth Proportional to 20,653.99, 28,502.47 and 11,222.48

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Solution

The fourth proportional to 20,653.99, 28,502.47 and 11,222.48 is: 15,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.99 : 28,502.47 = 11,222.48 : x
  2. Step 2: Convert to fraction form
    20,653.99/28,502.47 = 11,222.48/x
  3. Step 3: Cross multiply
    20,653.99x = 28,502.47 × 11,222.48
  4. Step 4: Simplify right side
    20,653.99x = 319,868,399.53
  5. Step 5: Solve for x
    x = 319,868,399.53/20,653.99
  6. Step 6: Final answer
    x = 15,487.00

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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.