Home / 38,543.20-53,128.08-31,457.44

Finding the Fourth Proportional to 38,543.20, 53,128.08 and 31,457.44

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Solution

The fourth proportional to 38,543.20, 53,128.08 and 31,457.44 is: 43,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,543.20 : 53,128.08 = 31,457.44 : x
  2. Step 2: Convert to fraction form
    38,543.20/53,128.08 = 31,457.44/x
  3. Step 3: Cross multiply
    38,543.20x = 53,128.08 × 31,457.44
  4. Step 4: Simplify right side
    38,543.20x = 1,671,273,388.92
  5. Step 5: Solve for x
    x = 1,671,273,388.92/38,543.20
  6. Step 6: Final answer
    x = 43,361.04

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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.