Home / 18,421.06-25,400.94-12,442.35

Finding the Fourth Proportional to 18,421.06, 25,400.94 and 12,442.35

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Solution

The fourth proportional to 18,421.06, 25,400.94 and 12,442.35 is: 17,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.06 : 25,400.94 = 12,442.35 : x
  2. Step 2: Convert to fraction form
    18,421.06/25,400.94 = 12,442.35/x
  3. Step 3: Cross multiply
    18,421.06x = 25,400.94 × 12,442.35
  4. Step 4: Simplify right side
    18,421.06x = 316,047,385.81
  5. Step 5: Solve for x
    x = 316,047,385.81/18,421.06
  6. Step 6: Final answer
    x = 17,156.85

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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.