Home / 15,415.98-21,274.02-8,342.40

Finding the Fourth Proportional to 15,415.98, 21,274.02 and 8,342.40

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Solution

The fourth proportional to 15,415.98, 21,274.02 and 8,342.40 is: 11,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.98 : 21,274.02 = 8,342.40 : x
  2. Step 2: Convert to fraction form
    15,415.98/21,274.02 = 8,342.40/x
  3. Step 3: Cross multiply
    15,415.98x = 21,274.02 × 8,342.40
  4. Step 4: Simplify right side
    15,415.98x = 177,476,384.45
  5. Step 5: Solve for x
    x = 177,476,384.45/15,415.98
  6. Step 6: Final answer
    x = 11,512.49

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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.