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Finding the Fourth Proportional to 28,228.71, 38,955.83 and 19,275.99

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Solution

The fourth proportional to 28,228.71, 38,955.83 and 19,275.99 is: 26,601.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.71 : 38,955.83 = 19,275.99 : x
  2. Step 2: Convert to fraction form
    28,228.71/38,955.83 = 19,275.99/x
  3. Step 3: Cross multiply
    28,228.71x = 38,955.83 × 19,275.99
  4. Step 4: Simplify right side
    28,228.71x = 750,912,189.52
  5. Step 5: Solve for x
    x = 750,912,189.52/28,228.71
  6. Step 6: Final answer
    x = 26,601.01

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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.