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Finding the Fourth Proportional to 30,345.84, 41,873.15 and 16,916.45

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Solution

The fourth proportional to 30,345.84, 41,873.15 and 16,916.45 is: 23,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.84 : 41,873.15 = 16,916.45 : x
  2. Step 2: Convert to fraction form
    30,345.84/41,873.15 = 16,916.45/x
  3. Step 3: Cross multiply
    30,345.84x = 41,873.15 × 16,916.45
  4. Step 4: Simplify right side
    30,345.84x = 708,344,881.24
  5. Step 5: Solve for x
    x = 708,344,881.24/30,345.84
  6. Step 6: Final answer
    x = 23,342.40

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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.