Home / 31,543.41-43,528.44-18,105.21

Finding the Fourth Proportional to 31,543.41, 43,528.44 and 18,105.21

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Solution

The fourth proportional to 31,543.41, 43,528.44 and 18,105.21 is: 24,984.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,543.41 : 43,528.44 = 18,105.21 : x
  2. Step 2: Convert to fraction form
    31,543.41/43,528.44 = 18,105.21/x
  3. Step 3: Cross multiply
    31,543.41x = 43,528.44 × 18,105.21
  4. Step 4: Simplify right side
    31,543.41x = 788,091,547.17
  5. Step 5: Solve for x
    x = 788,091,547.17/31,543.41
  6. Step 6: Final answer
    x = 24,984.35

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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.