Home / 31,543.84-43,528.62-18,117.28

Finding the Fourth Proportional to 31,543.84, 43,528.62 and 18,117.28

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Solution

The fourth proportional to 31,543.84, 43,528.62 and 18,117.28 is: 25,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,543.84 : 43,528.62 = 18,117.28 : x
  2. Step 2: Convert to fraction form
    31,543.84/43,528.62 = 18,117.28/x
  3. Step 3: Cross multiply
    31,543.84x = 43,528.62 × 18,117.28
  4. Step 4: Simplify right side
    31,543.84x = 788,620,196.55
  5. Step 5: Solve for x
    x = 788,620,196.55/31,543.84
  6. Step 6: Final answer
    x = 25,000.77

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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.