Home / 20,919.07-28,925.16-20,581.10

Finding the Fourth Proportional to 20,919.07, 28,925.16 and 20,581.10

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Solution

The fourth proportional to 20,919.07, 28,925.16 and 20,581.10 is: 28,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.07 : 28,925.16 = 20,581.10 : x
  2. Step 2: Convert to fraction form
    20,919.07/28,925.16 = 20,581.10/x
  3. Step 3: Cross multiply
    20,919.07x = 28,925.16 × 20,581.10
  4. Step 4: Simplify right side
    20,919.07x = 595,311,610.48
  5. Step 5: Solve for x
    x = 595,311,610.48/20,919.07
  6. Step 6: Final answer
    x = 28,457.84

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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.