Home / 31,087.17-42,914.70-18,336.06

Finding the Fourth Proportional to 31,087.17, 42,914.70 and 18,336.06

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Solution

The fourth proportional to 31,087.17, 42,914.70 and 18,336.06 is: 25,312.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,087.17 : 42,914.70 = 18,336.06 : x
  2. Step 2: Convert to fraction form
    31,087.17/42,914.70 = 18,336.06/x
  3. Step 3: Cross multiply
    31,087.17x = 42,914.70 × 18,336.06
  4. Step 4: Simplify right side
    31,087.17x = 786,886,514.08
  5. Step 5: Solve for x
    x = 786,886,514.08/31,087.17
  6. Step 6: Final answer
    x = 25,312.26

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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.