Home / 20,867.68-28,798.77-12,802.24

Finding the Fourth Proportional to 20,867.68, 28,798.77 and 12,802.24

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Solution

The fourth proportional to 20,867.68, 28,798.77 and 12,802.24 is: 17,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.68 : 28,798.77 = 12,802.24 : x
  2. Step 2: Convert to fraction form
    20,867.68/28,798.77 = 12,802.24/x
  3. Step 3: Cross multiply
    20,867.68x = 28,798.77 × 12,802.24
  4. Step 4: Simplify right side
    20,867.68x = 368,688,765.24
  5. Step 5: Solve for x
    x = 368,688,765.24/20,867.68
  6. Step 6: Final answer
    x = 17,667.93

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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.