Home / 31,486.05-47,214.90-9,291.78

Finding the Fourth Proportional to 31,486.05, 47,214.90 and 9,291.78

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Solution

The fourth proportional to 31,486.05, 47,214.90 and 9,291.78 is: 13,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.05 : 47,214.90 = 9,291.78 : x
  2. Step 2: Convert to fraction form
    31,486.05/47,214.90 = 9,291.78/x
  3. Step 3: Cross multiply
    31,486.05x = 47,214.90 × 9,291.78
  4. Step 4: Simplify right side
    31,486.05x = 438,710,463.52
  5. Step 5: Solve for x
    x = 438,710,463.52/31,486.05
  6. Step 6: Final answer
    x = 13,933.49

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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.