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Finding the Fourth Proportional to 15,594.09, 21,522.28 and 9,931.28

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Solution

The fourth proportional to 15,594.09, 21,522.28 and 9,931.28 is: 13,706.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,594.09 : 21,522.28 = 9,931.28 : x
  2. Step 2: Convert to fraction form
    15,594.09/21,522.28 = 9,931.28/x
  3. Step 3: Cross multiply
    15,594.09x = 21,522.28 × 9,931.28
  4. Step 4: Simplify right side
    15,594.09x = 213,743,884.63
  5. Step 5: Solve for x
    x = 213,743,884.63/15,594.09
  6. Step 6: Final answer
    x = 13,706.72

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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.