Home / 20,419.31-30,622.47-6,565.07

Finding the Fourth Proportional to 20,419.31, 30,622.47 and 6,565.07

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Solution

The fourth proportional to 20,419.31, 30,622.47 and 6,565.07 is: 9,845.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.31 : 30,622.47 = 6,565.07 : x
  2. Step 2: Convert to fraction form
    20,419.31/30,622.47 = 6,565.07/x
  3. Step 3: Cross multiply
    20,419.31x = 30,622.47 × 6,565.07
  4. Step 4: Simplify right side
    20,419.31x = 201,038,506.01
  5. Step 5: Solve for x
    x = 201,038,506.01/20,419.31
  6. Step 6: Final answer
    x = 9,845.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.