Home / 28,990.86-43,491.69-9,274.38

Finding the Fourth Proportional to 28,990.86, 43,491.69 and 9,274.38

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Solution

The fourth proportional to 28,990.86, 43,491.69 and 9,274.38 is: 13,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.86 : 43,491.69 = 9,274.38 : x
  2. Step 2: Convert to fraction form
    28,990.86/43,491.69 = 9,274.38/x
  3. Step 3: Cross multiply
    28,990.86x = 43,491.69 × 9,274.38
  4. Step 4: Simplify right side
    28,990.86x = 403,358,459.90
  5. Step 5: Solve for x
    x = 403,358,459.90/28,990.86
  6. Step 6: Final answer
    x = 13,913.30

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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.