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Finding the Fourth Proportional to 15,364.16, 21,201.32 and 8,648.45

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Solution

The fourth proportional to 15,364.16, 21,201.32 and 8,648.45 is: 11,934.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,364.16 : 21,201.32 = 8,648.45 : x
  2. Step 2: Convert to fraction form
    15,364.16/21,201.32 = 8,648.45/x
  3. Step 3: Cross multiply
    15,364.16x = 21,201.32 × 8,648.45
  4. Step 4: Simplify right side
    15,364.16x = 183,358,471.57
  5. Step 5: Solve for x
    x = 183,358,471.57/15,364.16
  6. Step 6: Final answer
    x = 11,934.17

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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.