Home / 31,541.17-43,533.12-18,121.63

Finding the Fourth Proportional to 31,541.17, 43,533.12 and 18,121.63

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Solution

The fourth proportional to 31,541.17, 43,533.12 and 18,121.63 is: 25,011.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,541.17 : 43,533.12 = 18,121.63 : x
  2. Step 2: Convert to fraction form
    31,541.17/43,533.12 = 18,121.63/x
  3. Step 3: Cross multiply
    31,541.17x = 43,533.12 × 18,121.63
  4. Step 4: Simplify right side
    31,541.17x = 788,891,093.39
  5. Step 5: Solve for x
    x = 788,891,093.39/31,541.17
  6. Step 6: Final answer
    x = 25,011.47

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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.