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Finding the Fourth Proportional to 40,411.40, 60,621.02 and 13,776.16

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Solution

The fourth proportional to 40,411.40, 60,621.02 and 13,776.16 is: 20,665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,411.40 : 60,621.02 = 13,776.16 : x
  2. Step 2: Convert to fraction form
    40,411.40/60,621.02 = 13,776.16/x
  3. Step 3: Cross multiply
    40,411.40x = 60,621.02 × 13,776.16
  4. Step 4: Simplify right side
    40,411.40x = 835,124,870.88
  5. Step 5: Solve for x
    x = 835,124,870.88/40,411.40
  6. Step 6: Final answer
    x = 20,665.58

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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.