Home / 15,430.01-21,293.37-8,356.41

Finding the Fourth Proportional to 15,430.01, 21,293.37 and 8,356.41

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Solution

The fourth proportional to 15,430.01, 21,293.37 and 8,356.41 is: 11,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.01 : 21,293.37 = 8,356.41 : x
  2. Step 2: Convert to fraction form
    15,430.01/21,293.37 = 8,356.41/x
  3. Step 3: Cross multiply
    15,430.01x = 21,293.37 × 8,356.41
  4. Step 4: Simplify right side
    15,430.01x = 177,936,141.45
  5. Step 5: Solve for x
    x = 177,936,141.45/15,430.01
  6. Step 6: Final answer
    x = 11,531.82

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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.