Home / 19,638.90-29,465.64-9,114.12

Finding the Fourth Proportional to 19,638.90, 29,465.64 and 9,114.12

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Solution

The fourth proportional to 19,638.90, 29,465.64 and 9,114.12 is: 13,674.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.90 : 29,465.64 = 9,114.12 : x
  2. Step 2: Convert to fraction form
    19,638.90/29,465.64 = 9,114.12/x
  3. Step 3: Cross multiply
    19,638.90x = 29,465.64 × 9,114.12
  4. Step 4: Simplify right side
    19,638.90x = 268,553,378.84
  5. Step 5: Solve for x
    x = 268,553,378.84/19,638.90
  6. Step 6: Final answer
    x = 13,674.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.