Home / 20,765.42-28,656.28-14,807.46

Finding the Fourth Proportional to 20,765.42, 28,656.28 and 14,807.46

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Solution

The fourth proportional to 20,765.42, 28,656.28 and 14,807.46 is: 20,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.42 : 28,656.28 = 14,807.46 : x
  2. Step 2: Convert to fraction form
    20,765.42/28,656.28 = 14,807.46/x
  3. Step 3: Cross multiply
    20,765.42x = 28,656.28 × 14,807.46
  4. Step 4: Simplify right side
    20,765.42x = 424,326,719.85
  5. Step 5: Solve for x
    x = 424,326,719.85/20,765.42
  6. Step 6: Final answer
    x = 20,434.30

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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.