Home / 31,410.34-43,328.10-18,827.80

Finding the Fourth Proportional to 31,410.34, 43,328.10 and 18,827.80

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Solution

The fourth proportional to 31,410.34, 43,328.10 and 18,827.80 is: 25,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,410.34 : 43,328.10 = 18,827.80 : x
  2. Step 2: Convert to fraction form
    31,410.34/43,328.10 = 18,827.80/x
  3. Step 3: Cross multiply
    31,410.34x = 43,328.10 × 18,827.80
  4. Step 4: Simplify right side
    31,410.34x = 815,772,801.18
  5. Step 5: Solve for x
    x = 815,772,801.18/31,410.34
  6. Step 6: Final answer
    x = 25,971.47

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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.