Home / 28,715.49-43,029.27-19,320.71

Finding the Fourth Proportional to 28,715.49, 43,029.27 and 19,320.71

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Solution

The fourth proportional to 28,715.49, 43,029.27 and 19,320.71 is: 28,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.49 : 43,029.27 = 19,320.71 : x
  2. Step 2: Convert to fraction form
    28,715.49/43,029.27 = 19,320.71/x
  3. Step 3: Cross multiply
    28,715.49x = 43,029.27 × 19,320.71
  4. Step 4: Simplify right side
    28,715.49x = 831,355,832.04
  5. Step 5: Solve for x
    x = 831,355,832.04/28,715.49
  6. Step 6: Final answer
    x = 28,951.48

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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.