Home / 31,638.15-47,457.21-28,998.23

Finding the Fourth Proportional to 31,638.15, 47,457.21 and 28,998.23

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Solution

The fourth proportional to 31,638.15, 47,457.21 and 28,998.23 is: 43,497.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.15 : 47,457.21 = 28,998.23 : x
  2. Step 2: Convert to fraction form
    31,638.15/47,457.21 = 28,998.23/x
  3. Step 3: Cross multiply
    31,638.15x = 47,457.21 × 28,998.23
  4. Step 4: Simplify right side
    31,638.15x = 1,376,175,090.74
  5. Step 5: Solve for x
    x = 1,376,175,090.74/31,638.15
  6. Step 6: Final answer
    x = 43,497.33

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.