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Finding the Fourth Proportional to 43,807.80, 65,718.96 and 14,219.40

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Solution

The fourth proportional to 43,807.80, 65,718.96 and 14,219.40 is: 21,331.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,807.80 : 65,718.96 = 14,219.40 : x
  2. Step 2: Convert to fraction form
    43,807.80/65,718.96 = 14,219.40/x
  3. Step 3: Cross multiply
    43,807.80x = 65,718.96 × 14,219.40
  4. Step 4: Simplify right side
    43,807.80x = 934,484,179.82
  5. Step 5: Solve for x
    x = 934,484,179.82/43,807.80
  6. Step 6: Final answer
    x = 21,331.46

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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.