Home / 20,435.90-30,655.60-7,285.01

Finding the Fourth Proportional to 20,435.90, 30,655.60 and 7,285.01

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Solution

The fourth proportional to 20,435.90, 30,655.60 and 7,285.01 is: 10,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.90 : 30,655.60 = 7,285.01 : x
  2. Step 2: Convert to fraction form
    20,435.90/30,655.60 = 7,285.01/x
  3. Step 3: Cross multiply
    20,435.90x = 30,655.60 × 7,285.01
  4. Step 4: Simplify right side
    20,435.90x = 223,326,181.07
  5. Step 5: Solve for x
    x = 223,326,181.07/20,435.90
  6. Step 6: Final answer
    x = 10,928.13

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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.