Home / 20,913.23-28,860.29-11,482.40

Finding the Fourth Proportional to 20,913.23, 28,860.29 and 11,482.40

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Solution

The fourth proportional to 20,913.23, 28,860.29 and 11,482.40 is: 15,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.23 : 28,860.29 = 11,482.40 : x
  2. Step 2: Convert to fraction form
    20,913.23/28,860.29 = 11,482.40/x
  3. Step 3: Cross multiply
    20,913.23x = 28,860.29 × 11,482.40
  4. Step 4: Simplify right side
    20,913.23x = 331,385,192.18
  5. Step 5: Solve for x
    x = 331,385,192.18/20,913.23
  6. Step 6: Final answer
    x = 15,845.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.