Home / 12,639.12-18,848.10-12,341.04

Finding the Fourth Proportional to 12,639.12, 18,848.10 and 12,341.04

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Solution

The fourth proportional to 12,639.12, 18,848.10 and 12,341.04 is: 18,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.12 : 18,848.10 = 12,341.04 : x
  2. Step 2: Convert to fraction form
    12,639.12/18,848.10 = 12,341.04/x
  3. Step 3: Cross multiply
    12,639.12x = 18,848.10 × 12,341.04
  4. Step 4: Simplify right side
    12,639.12x = 232,605,156.02
  5. Step 5: Solve for x
    x = 232,605,156.02/12,639.12
  6. Step 6: Final answer
    x = 18,403.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.