Home / 31,528.16-43,512.80-18,103.62

Finding the Fourth Proportional to 31,528.16, 43,512.80 and 18,103.62

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Solution

The fourth proportional to 31,528.16, 43,512.80 and 18,103.62 is: 24,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.16 : 43,512.80 = 18,103.62 : x
  2. Step 2: Convert to fraction form
    31,528.16/43,512.80 = 18,103.62/x
  3. Step 3: Cross multiply
    31,528.16x = 43,512.80 × 18,103.62
  4. Step 4: Simplify right side
    31,528.16x = 787,739,196.34
  5. Step 5: Solve for x
    x = 787,739,196.34/31,528.16
  6. Step 6: Final answer
    x = 24,985.26

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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.