Home / 15,235.29-21,015.45-9,271.13

Finding the Fourth Proportional to 15,235.29, 21,015.45 and 9,271.13

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Solution

The fourth proportional to 15,235.29, 21,015.45 and 9,271.13 is: 12,788.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.29 : 21,015.45 = 9,271.13 : x
  2. Step 2: Convert to fraction form
    15,235.29/21,015.45 = 9,271.13/x
  3. Step 3: Cross multiply
    15,235.29x = 21,015.45 × 9,271.13
  4. Step 4: Simplify right side
    15,235.29x = 194,836,863.88
  5. Step 5: Solve for x
    x = 194,836,863.88/15,235.29
  6. Step 6: Final answer
    x = 12,788.52

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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.