Home / 19,728.18-27,225.12-10,775.76

Finding the Fourth Proportional to 19,728.18, 27,225.12 and 10,775.76

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Solution

The fourth proportional to 19,728.18, 27,225.12 and 10,775.76 is: 14,870.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.18 : 27,225.12 = 10,775.76 : x
  2. Step 2: Convert to fraction form
    19,728.18/27,225.12 = 10,775.76/x
  3. Step 3: Cross multiply
    19,728.18x = 27,225.12 × 10,775.76
  4. Step 4: Simplify right side
    19,728.18x = 293,371,359.09
  5. Step 5: Solve for x
    x = 293,371,359.09/19,728.18
  6. Step 6: Final answer
    x = 14,870.68

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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.