Home / 20,807.59-31,196.80-7,658.25

Finding the Fourth Proportional to 20,807.59, 31,196.80 and 7,658.25

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Solution

The fourth proportional to 20,807.59, 31,196.80 and 7,658.25 is: 11,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.59 : 31,196.80 = 7,658.25 : x
  2. Step 2: Convert to fraction form
    20,807.59/31,196.80 = 7,658.25/x
  3. Step 3: Cross multiply
    20,807.59x = 31,196.80 × 7,658.25
  4. Step 4: Simplify right side
    20,807.59x = 238,912,893.60
  5. Step 5: Solve for x
    x = 238,912,893.60/20,807.59
  6. Step 6: Final answer
    x = 11,482.01

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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.