Home / 28,117.37-42,160.10-11,457.90

Finding the Fourth Proportional to 28,117.37, 42,160.10 and 11,457.90

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Solution

The fourth proportional to 28,117.37, 42,160.10 and 11,457.90 is: 17,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.37 : 42,160.10 = 11,457.90 : x
  2. Step 2: Convert to fraction form
    28,117.37/42,160.10 = 11,457.90/x
  3. Step 3: Cross multiply
    28,117.37x = 42,160.10 × 11,457.90
  4. Step 4: Simplify right side
    28,117.37x = 483,066,238.43
  5. Step 5: Solve for x
    x = 483,066,238.43/28,117.37
  6. Step 6: Final answer
    x = 17,180.35

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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.