Home / 31,378.44-43,300.90-18,810.12

Finding the Fourth Proportional to 31,378.44, 43,300.90 and 18,810.12

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Solution

The fourth proportional to 31,378.44, 43,300.90 and 18,810.12 is: 25,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.44 : 43,300.90 = 18,810.12 : x
  2. Step 2: Convert to fraction form
    31,378.44/43,300.90 = 18,810.12/x
  3. Step 3: Cross multiply
    31,378.44x = 43,300.90 × 18,810.12
  4. Step 4: Simplify right side
    31,378.44x = 814,495,125.11
  5. Step 5: Solve for x
    x = 814,495,125.11/31,378.44
  6. Step 6: Final answer
    x = 25,957.16

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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.