Home / 27,830.43-38,406.45-15,728.46

Finding the Fourth Proportional to 27,830.43, 38,406.45 and 15,728.46

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Solution

The fourth proportional to 27,830.43, 38,406.45 and 15,728.46 is: 21,705.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,830.43 : 38,406.45 = 15,728.46 : x
  2. Step 2: Convert to fraction form
    27,830.43/38,406.45 = 15,728.46/x
  3. Step 3: Cross multiply
    27,830.43x = 38,406.45 × 15,728.46
  4. Step 4: Simplify right side
    27,830.43x = 604,074,362.55
  5. Step 5: Solve for x
    x = 604,074,362.55/27,830.43
  6. Step 6: Final answer
    x = 21,705.54

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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.