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Finding the Fourth Proportional to 32,631, 45,030.78 and 19,383

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Solution

The fourth proportional to 32,631, 45,030.78 and 19,383 is: 26,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,631 : 45,030.78 = 19,383 : x
  2. Step 2: Convert to fraction form
    32,631/45,030.78 = 19,383/x
  3. Step 3: Cross multiply
    32,631x = 45,030.78 × 19,383
  4. Step 4: Simplify right side
    32,631x = 872,831,608.74
  5. Step 5: Solve for x
    x = 872,831,608.74/32,631
  6. Step 6: Final answer
    x = 26,748.54

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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.