Home / 18,741.47-28,121.31-8,868.99

Finding the Fourth Proportional to 18,741.47, 28,121.31 and 8,868.99

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Solution

The fourth proportional to 18,741.47, 28,121.31 and 8,868.99 is: 13,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.47 : 28,121.31 = 8,868.99 : x
  2. Step 2: Convert to fraction form
    18,741.47/28,121.31 = 8,868.99/x
  3. Step 3: Cross multiply
    18,741.47x = 28,121.31 × 8,868.99
  4. Step 4: Simplify right side
    18,741.47x = 249,407,617.18
  5. Step 5: Solve for x
    x = 249,407,617.18/18,741.47
  6. Step 6: Final answer
    x = 13,307.80

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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.