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Finding the Fourth Proportional to 15,226.52, 21,019.07 and 9,260.10

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Solution

The fourth proportional to 15,226.52, 21,019.07 and 9,260.10 is: 12,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.52 : 21,019.07 = 9,260.10 : x
  2. Step 2: Convert to fraction form
    15,226.52/21,019.07 = 9,260.10/x
  3. Step 3: Cross multiply
    15,226.52x = 21,019.07 × 9,260.10
  4. Step 4: Simplify right side
    15,226.52x = 194,638,690.11
  5. Step 5: Solve for x
    x = 194,638,690.11/15,226.52
  6. Step 6: Final answer
    x = 12,782.87

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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.