Home / 15,845.69-21,869.34-9,130.03

Finding the Fourth Proportional to 15,845.69, 21,869.34 and 9,130.03

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Solution

The fourth proportional to 15,845.69, 21,869.34 and 9,130.03 is: 12,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.69 : 21,869.34 = 9,130.03 : x
  2. Step 2: Convert to fraction form
    15,845.69/21,869.34 = 9,130.03/x
  3. Step 3: Cross multiply
    15,845.69x = 21,869.34 × 9,130.03
  4. Step 4: Simplify right side
    15,845.69x = 199,667,730.28
  5. Step 5: Solve for x
    x = 199,667,730.28/15,845.69
  6. Step 6: Final answer
    x = 12,600.76

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1.5x scale

Why These Related Problems?

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