Home / 20,152.87-27,811.90-11,200.52

Finding the Fourth Proportional to 20,152.87, 27,811.90 and 11,200.52

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Solution

The fourth proportional to 20,152.87, 27,811.90 and 11,200.52 is: 15,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,152.87 : 27,811.90 = 11,200.52 : x
  2. Step 2: Convert to fraction form
    20,152.87/27,811.90 = 11,200.52/x
  3. Step 3: Cross multiply
    20,152.87x = 27,811.90 × 11,200.52
  4. Step 4: Simplify right side
    20,152.87x = 311,507,547.13
  5. Step 5: Solve for x
    x = 311,507,547.13/20,152.87
  6. Step 6: Final answer
    x = 15,457.23

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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.