Home / 15,415.74-21,242.31-10,637.15

Finding the Fourth Proportional to 15,415.74, 21,242.31 and 10,637.15

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Solution

The fourth proportional to 15,415.74, 21,242.31 and 10,637.15 is: 14,657.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.74 : 21,242.31 = 10,637.15 : x
  2. Step 2: Convert to fraction form
    15,415.74/21,242.31 = 10,637.15/x
  3. Step 3: Cross multiply
    15,415.74x = 21,242.31 × 10,637.15
  4. Step 4: Simplify right side
    15,415.74x = 225,957,531.60
  5. Step 5: Solve for x
    x = 225,957,531.60/15,415.74
  6. Step 6: Final answer
    x = 14,657.59

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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.