Home / 15,430.50-23,155.31-7,111.71

Finding the Fourth Proportional to 15,430.50, 23,155.31 and 7,111.71

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Solution

The fourth proportional to 15,430.50, 23,155.31 and 7,111.71 is: 10,671.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.50 : 23,155.31 = 7,111.71 : x
  2. Step 2: Convert to fraction form
    15,430.50/23,155.31 = 7,111.71/x
  3. Step 3: Cross multiply
    15,430.50x = 23,155.31 × 7,111.71
  4. Step 4: Simplify right side
    15,430.50x = 164,673,849.68
  5. Step 5: Solve for x
    x = 164,673,849.68/15,430.50
  6. Step 6: Final answer
    x = 10,671.97

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Half scale
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Double scale
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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.