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Finding the Fourth Proportional to 30,342.79, 41,878.11 and 22,407.94

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Solution

The fourth proportional to 30,342.79, 41,878.11 and 22,407.94 is: 30,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.79 : 41,878.11 = 22,407.94 : x
  2. Step 2: Convert to fraction form
    30,342.79/41,878.11 = 22,407.94/x
  3. Step 3: Cross multiply
    30,342.79x = 41,878.11 × 22,407.94
  4. Step 4: Simplify right side
    30,342.79x = 938,402,176.19
  5. Step 5: Solve for x
    x = 938,402,176.19/30,342.79
  6. Step 6: Final answer
    x = 30,926.69

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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.