Home / 15,742.08-21,727.84-9,770.22

Finding the Fourth Proportional to 15,742.08, 21,727.84 and 9,770.22

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Solution

The fourth proportional to 15,742.08, 21,727.84 and 9,770.22 is: 13,485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.08 : 21,727.84 = 9,770.22 : x
  2. Step 2: Convert to fraction form
    15,742.08/21,727.84 = 9,770.22/x
  3. Step 3: Cross multiply
    15,742.08x = 21,727.84 × 9,770.22
  4. Step 4: Simplify right side
    15,742.08x = 212,285,776.92
  5. Step 5: Solve for x
    x = 212,285,776.92/15,742.08
  6. Step 6: Final answer
    x = 13,485.24

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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.