Home / 30,433.71-42,005.54-19,804.89

Finding the Fourth Proportional to 30,433.71, 42,005.54 and 19,804.89

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Solution

The fourth proportional to 30,433.71, 42,005.54 and 19,804.89 is: 27,335.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,433.71 : 42,005.54 = 19,804.89 : x
  2. Step 2: Convert to fraction form
    30,433.71/42,005.54 = 19,804.89/x
  3. Step 3: Cross multiply
    30,433.71x = 42,005.54 × 19,804.89
  4. Step 4: Simplify right side
    30,433.71x = 831,915,000.07
  5. Step 5: Solve for x
    x = 831,915,000.07/30,433.71
  6. Step 6: Final answer
    x = 27,335.31

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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.