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Finding the Fourth Proportional to 31,630, 43,649.40 and 19,057.36

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Solution

The fourth proportional to 31,630, 43,649.40 and 19,057.36 is: 26,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630 : 43,649.40 = 19,057.36 : x
  2. Step 2: Convert to fraction form
    31,630/43,649.40 = 19,057.36/x
  3. Step 3: Cross multiply
    31,630x = 43,649.40 × 19,057.36
  4. Step 4: Simplify right side
    31,630x = 831,842,329.58
  5. Step 5: Solve for x
    x = 831,842,329.58/31,630
  6. Step 6: Final answer
    x = 26,299.16

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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.