Home / 31,840.74-43,935.32-18,409.40

Finding the Fourth Proportional to 31,840.74, 43,935.32 and 18,409.40

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Solution

The fourth proportional to 31,840.74, 43,935.32 and 18,409.40 is: 25,402.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,840.74 : 43,935.32 = 18,409.40 : x
  2. Step 2: Convert to fraction form
    31,840.74/43,935.32 = 18,409.40/x
  3. Step 3: Cross multiply
    31,840.74x = 43,935.32 × 18,409.40
  4. Step 4: Simplify right side
    31,840.74x = 808,822,880.01
  5. Step 5: Solve for x
    x = 808,822,880.01/31,840.74
  6. Step 6: Final answer
    x = 25,402.14

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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.