Home / 19,165.79-28,746.41-5,126.90

Finding the Fourth Proportional to 19,165.79, 28,746.41 and 5,126.90

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Solution

The fourth proportional to 19,165.79, 28,746.41 and 5,126.90 is: 7,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.79 : 28,746.41 = 5,126.90 : x
  2. Step 2: Convert to fraction form
    19,165.79/28,746.41 = 5,126.90/x
  3. Step 3: Cross multiply
    19,165.79x = 28,746.41 × 5,126.90
  4. Step 4: Simplify right side
    19,165.79x = 147,379,969.43
  5. Step 5: Solve for x
    x = 147,379,969.43/19,165.79
  6. Step 6: Final answer
    x = 7,689.74

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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.