Home / 38,740.24-53,457.12-21,742.18

Finding the Fourth Proportional to 38,740.24, 53,457.12 and 21,742.18

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Solution

The fourth proportional to 38,740.24, 53,457.12 and 21,742.18 is: 30,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,740.24 : 53,457.12 = 21,742.18 : x
  2. Step 2: Convert to fraction form
    38,740.24/53,457.12 = 21,742.18/x
  3. Step 3: Cross multiply
    38,740.24x = 53,457.12 × 21,742.18
  4. Step 4: Simplify right side
    38,740.24x = 1,162,274,325.32
  5. Step 5: Solve for x
    x = 1,162,274,325.32/38,740.24
  6. Step 6: Final answer
    x = 30,001.73

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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.