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Finding the Fourth Proportional to 37,688.49, 52,010.19 and 20,921.49

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Solution

The fourth proportional to 37,688.49, 52,010.19 and 20,921.49 is: 28,871.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,688.49 : 52,010.19 = 20,921.49 : x
  2. Step 2: Convert to fraction form
    37,688.49/52,010.19 = 20,921.49/x
  3. Step 3: Cross multiply
    37,688.49x = 52,010.19 × 20,921.49
  4. Step 4: Simplify right side
    37,688.49x = 1,088,130,669.98
  5. Step 5: Solve for x
    x = 1,088,130,669.98/37,688.49
  6. Step 6: Final answer
    x = 28,871.70

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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.