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Finding the Fourth Proportional to 37,643.76, 51,946.92 and 20,876.40

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Solution

The fourth proportional to 37,643.76, 51,946.92 and 20,876.40 is: 28,808.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,643.76 : 51,946.92 = 20,876.40 : x
  2. Step 2: Convert to fraction form
    37,643.76/51,946.92 = 20,876.40/x
  3. Step 3: Cross multiply
    37,643.76x = 51,946.92 × 20,876.40
  4. Step 4: Simplify right side
    37,643.76x = 1,084,464,680.69
  5. Step 5: Solve for x
    x = 1,084,464,680.69/37,643.76
  6. Step 6: Final answer
    x = 28,808.62

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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.