Home / 10,219.49-14,102.08-5,742.40

Finding the Fourth Proportional to 10,219.49, 14,102.08 and 5,742.40

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Solution

The fourth proportional to 10,219.49, 14,102.08 and 5,742.40 is: 7,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219.49 : 14,102.08 = 5,742.40 : x
  2. Step 2: Convert to fraction form
    10,219.49/14,102.08 = 5,742.40/x
  3. Step 3: Cross multiply
    10,219.49x = 14,102.08 × 5,742.40
  4. Step 4: Simplify right side
    10,219.49x = 80,979,684.97
  5. Step 5: Solve for x
    x = 80,979,684.97/10,219.49
  6. Step 6: Final answer
    x = 7,924.05

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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.