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Finding the Fourth Proportional to 20,443.95, 30,652.16 and 7,113.51

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Solution

The fourth proportional to 20,443.95, 30,652.16 and 7,113.51 is: 10,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.95 : 30,652.16 = 7,113.51 : x
  2. Step 2: Convert to fraction form
    20,443.95/30,652.16 = 7,113.51/x
  3. Step 3: Cross multiply
    20,443.95x = 30,652.16 × 7,113.51
  4. Step 4: Simplify right side
    20,443.95x = 218,044,411.11
  5. Step 5: Solve for x
    x = 218,044,411.11/20,443.95
  6. Step 6: Final answer
    x = 10,665.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.