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Finding the Fourth Proportional to 31,967.99, 44,134.74 and 28,421.40

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Solution

The fourth proportional to 31,967.99, 44,134.74 and 28,421.40 is: 39,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,967.99 : 44,134.74 = 28,421.40 : x
  2. Step 2: Convert to fraction form
    31,967.99/44,134.74 = 28,421.40/x
  3. Step 3: Cross multiply
    31,967.99x = 44,134.74 × 28,421.40
  4. Step 4: Simplify right side
    31,967.99x = 1,254,371,099.44
  5. Step 5: Solve for x
    x = 1,254,371,099.44/31,967.99
  6. Step 6: Final answer
    x = 39,238.35

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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.