Home / 28,457.13-39,270.86-15,881.88

Finding the Fourth Proportional to 28,457.13, 39,270.86 and 15,881.88

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Solution

The fourth proportional to 28,457.13, 39,270.86 and 15,881.88 is: 21,917.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.13 : 39,270.86 = 15,881.88 : x
  2. Step 2: Convert to fraction form
    28,457.13/39,270.86 = 15,881.88/x
  3. Step 3: Cross multiply
    28,457.13x = 39,270.86 × 15,881.88
  4. Step 4: Simplify right side
    28,457.13x = 623,695,086.02
  5. Step 5: Solve for x
    x = 623,695,086.02/28,457.13
  6. Step 6: Final answer
    x = 21,917.01

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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.