Home / 31,631.68-43,639.04-19,054.72

Finding the Fourth Proportional to 31,631.68, 43,639.04 and 19,054.72

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Solution

The fourth proportional to 31,631.68, 43,639.04 and 19,054.72 is: 26,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631.68 : 43,639.04 = 19,054.72 : x
  2. Step 2: Convert to fraction form
    31,631.68/43,639.04 = 19,054.72/x
  3. Step 3: Cross multiply
    31,631.68x = 43,639.04 × 19,054.72
  4. Step 4: Simplify right side
    31,631.68x = 831,529,688.27
  5. Step 5: Solve for x
    x = 831,529,688.27/31,631.68
  6. Step 6: Final answer
    x = 26,287.88

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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.