Home / 28,073.53-42,128.36-11,203.65

Finding the Fourth Proportional to 28,073.53, 42,128.36 and 11,203.65

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Solution

The fourth proportional to 28,073.53, 42,128.36 and 11,203.65 is: 16,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.53 : 42,128.36 = 11,203.65 : x
  2. Step 2: Convert to fraction form
    28,073.53/42,128.36 = 11,203.65/x
  3. Step 3: Cross multiply
    28,073.53x = 42,128.36 × 11,203.65
  4. Step 4: Simplify right side
    28,073.53x = 471,991,386.51
  5. Step 5: Solve for x
    x = 471,991,386.51/28,073.53
  6. Step 6: Final answer
    x = 16,812.68

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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.