Home / 20,534.16-28,341.54-12,975.69

Finding the Fourth Proportional to 20,534.16, 28,341.54 and 12,975.69

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Solution

The fourth proportional to 20,534.16, 28,341.54 and 12,975.69 is: 17,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.16 : 28,341.54 = 12,975.69 : x
  2. Step 2: Convert to fraction form
    20,534.16/28,341.54 = 12,975.69/x
  3. Step 3: Cross multiply
    20,534.16x = 28,341.54 × 12,975.69
  4. Step 4: Simplify right side
    20,534.16x = 367,751,037.16
  5. Step 5: Solve for x
    x = 367,751,037.16/20,534.16
  6. Step 6: Final answer
    x = 17,909.23

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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.