Home / 15,420.12-23,098.84-12,305.40

Finding the Fourth Proportional to 15,420.12, 23,098.84 and 12,305.40

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Solution

The fourth proportional to 15,420.12, 23,098.84 and 12,305.40 is: 18,433.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.12 : 23,098.84 = 12,305.40 : x
  2. Step 2: Convert to fraction form
    15,420.12/23,098.84 = 12,305.40/x
  3. Step 3: Cross multiply
    15,420.12x = 23,098.84 × 12,305.40
  4. Step 4: Simplify right side
    15,420.12x = 284,240,465.74
  5. Step 5: Solve for x
    x = 284,240,465.74/15,420.12
  6. Step 6: Final answer
    x = 18,433.09

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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.