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Finding the Fourth Proportional to 15,574.22, 21,495.21 and 9,287

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Solution

The fourth proportional to 15,574.22, 21,495.21 and 9,287 is: 12,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,574.22 : 21,495.21 = 9,287 : x
  2. Step 2: Convert to fraction form
    15,574.22/21,495.21 = 9,287/x
  3. Step 3: Cross multiply
    15,574.22x = 21,495.21 × 9,287
  4. Step 4: Simplify right side
    15,574.22x = 199,626,015.27
  5. Step 5: Solve for x
    x = 199,626,015.27/15,574.22
  6. Step 6: Final answer
    x = 12,817.72

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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.