Home / 27,709.02-38,270.27-20,188.98

Finding the Fourth Proportional to 27,709.02, 38,270.27 and 20,188.98

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Solution

The fourth proportional to 27,709.02, 38,270.27 and 20,188.98 is: 27,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,709.02 : 38,270.27 = 20,188.98 : x
  2. Step 2: Convert to fraction form
    27,709.02/38,270.27 = 20,188.98/x
  3. Step 3: Cross multiply
    27,709.02x = 38,270.27 × 20,188.98
  4. Step 4: Simplify right side
    27,709.02x = 772,637,766.10
  5. Step 5: Solve for x
    x = 772,637,766.10/27,709.02
  6. Step 6: Final answer
    x = 27,883.98

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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.