Home / 31,328.52-46,959.78-12,621.84

Finding the Fourth Proportional to 31,328.52, 46,959.78 and 12,621.84

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Solution

The fourth proportional to 31,328.52, 46,959.78 and 12,621.84 is: 18,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,328.52 : 46,959.78 = 12,621.84 : x
  2. Step 2: Convert to fraction form
    31,328.52/46,959.78 = 12,621.84/x
  3. Step 3: Cross multiply
    31,328.52x = 46,959.78 × 12,621.84
  4. Step 4: Simplify right side
    31,328.52x = 592,718,829.60
  5. Step 5: Solve for x
    x = 592,718,829.60/31,328.52
  6. Step 6: Final answer
    x = 18,919.46

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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.