Home / 28,684.81-42,964.90-13,862.64

Finding the Fourth Proportional to 28,684.81, 42,964.90 and 13,862.64

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Solution

The fourth proportional to 28,684.81, 42,964.90 and 13,862.64 is: 20,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.81 : 42,964.90 = 13,862.64 : x
  2. Step 2: Convert to fraction form
    28,684.81/42,964.90 = 13,862.64/x
  3. Step 3: Cross multiply
    28,684.81x = 42,964.90 × 13,862.64
  4. Step 4: Simplify right side
    28,684.81x = 595,606,941.34
  5. Step 5: Solve for x
    x = 595,606,941.34/28,684.81
  6. Step 6: Final answer
    x = 20,763.85

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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.