Home / 31,426.36-47,118.74-12,438.42

Finding the Fourth Proportional to 31,426.36, 47,118.74 and 12,438.42

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Solution

The fourth proportional to 31,426.36, 47,118.74 and 12,438.42 is: 18,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.36 : 47,118.74 = 12,438.42 : x
  2. Step 2: Convert to fraction form
    31,426.36/47,118.74 = 12,438.42/x
  3. Step 3: Cross multiply
    31,426.36x = 47,118.74 × 12,438.42
  4. Step 4: Simplify right side
    31,426.36x = 586,082,677.99
  5. Step 5: Solve for x
    x = 586,082,677.99/31,426.36
  6. Step 6: Final answer
    x = 18,649.40

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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.