Home / 15,703.12-21,660.69-9,325.39

Finding the Fourth Proportional to 15,703.12, 21,660.69 and 9,325.39

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Solution

The fourth proportional to 15,703.12, 21,660.69 and 9,325.39 is: 12,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.12 : 21,660.69 = 9,325.39 : x
  2. Step 2: Convert to fraction form
    15,703.12/21,660.69 = 9,325.39/x
  3. Step 3: Cross multiply
    15,703.12x = 21,660.69 × 9,325.39
  4. Step 4: Simplify right side
    15,703.12x = 201,994,381.92
  5. Step 5: Solve for x
    x = 201,994,381.92/15,703.12
  6. Step 6: Final answer
    x = 12,863.33

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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.