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Finding the Fourth Proportional to 27,530.85, 37,980.18 and 16,916.61

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Solution

The fourth proportional to 27,530.85, 37,980.18 and 16,916.61 is: 23,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,530.85 : 37,980.18 = 16,916.61 : x
  2. Step 2: Convert to fraction form
    27,530.85/37,980.18 = 16,916.61/x
  3. Step 3: Cross multiply
    27,530.85x = 37,980.18 × 16,916.61
  4. Step 4: Simplify right side
    27,530.85x = 642,495,892.79
  5. Step 5: Solve for x
    x = 642,495,892.79/27,530.85
  6. Step 6: Final answer
    x = 23,337.31

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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.