Home / 20,602.04-28,430.72-11,170.61

Finding the Fourth Proportional to 20,602.04, 28,430.72 and 11,170.61

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Solution

The fourth proportional to 20,602.04, 28,430.72 and 11,170.61 is: 15,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.04 : 28,430.72 = 11,170.61 : x
  2. Step 2: Convert to fraction form
    20,602.04/28,430.72 = 11,170.61/x
  3. Step 3: Cross multiply
    20,602.04x = 28,430.72 × 11,170.61
  4. Step 4: Simplify right side
    20,602.04x = 317,588,287.13
  5. Step 5: Solve for x
    x = 317,588,287.13/20,602.04
  6. Step 6: Final answer
    x = 15,415.38

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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.