Home / 15,788.57-21,784.28-9,076.10

Finding the Fourth Proportional to 15,788.57, 21,784.28 and 9,076.10

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Solution

The fourth proportional to 15,788.57, 21,784.28 and 9,076.10 is: 12,522.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.57 : 21,784.28 = 9,076.10 : x
  2. Step 2: Convert to fraction form
    15,788.57/21,784.28 = 9,076.10/x
  3. Step 3: Cross multiply
    15,788.57x = 21,784.28 × 9,076.10
  4. Step 4: Simplify right side
    15,788.57x = 197,716,149.41
  5. Step 5: Solve for x
    x = 197,716,149.41/15,788.57
  6. Step 6: Final answer
    x = 12,522.74

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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.