Home / 27,710.40-38,242.62-15,777.48

Finding the Fourth Proportional to 27,710.40, 38,242.62 and 15,777.48

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Solution

The fourth proportional to 27,710.40, 38,242.62 and 15,777.48 is: 21,774.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,710.40 : 38,242.62 = 15,777.48 : x
  2. Step 2: Convert to fraction form
    27,710.40/38,242.62 = 15,777.48/x
  3. Step 3: Cross multiply
    27,710.40x = 38,242.62 × 15,777.48
  4. Step 4: Simplify right side
    27,710.40x = 603,372,172.20
  5. Step 5: Solve for x
    x = 603,372,172.20/27,710.40
  6. Step 6: Final answer
    x = 21,774.21

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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.