Home / 31,325.51-43,228.71-16,985.05

Finding the Fourth Proportional to 31,325.51, 43,228.71 and 16,985.05

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Solution

The fourth proportional to 31,325.51, 43,228.71 and 16,985.05 is: 23,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,325.51 : 43,228.71 = 16,985.05 : x
  2. Step 2: Convert to fraction form
    31,325.51/43,228.71 = 16,985.05/x
  3. Step 3: Cross multiply
    31,325.51x = 43,228.71 × 16,985.05
  4. Step 4: Simplify right side
    31,325.51x = 734,242,044.44
  5. Step 5: Solve for x
    x = 734,242,044.44/31,325.51
  6. Step 6: Final answer
    x = 23,439.11

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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.