Home / 20,765.90-28,656.96-14,807.94

Finding the Fourth Proportional to 20,765.90, 28,656.96 and 14,807.94

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Solution

The fourth proportional to 20,765.90, 28,656.96 and 14,807.94 is: 20,434.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.90 : 28,656.96 = 14,807.94 : x
  2. Step 2: Convert to fraction form
    20,765.90/28,656.96 = 14,807.94/x
  3. Step 3: Cross multiply
    20,765.90x = 28,656.96 × 14,807.94
  4. Step 4: Simplify right side
    20,765.90x = 424,350,544.26
  5. Step 5: Solve for x
    x = 424,350,544.26/20,765.90
  6. Step 6: Final answer
    x = 20,434.97

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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.