Home / 15,490.59-21,376.94-8,417.06

Finding the Fourth Proportional to 15,490.59, 21,376.94 and 8,417.06

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Solution

The fourth proportional to 15,490.59, 21,376.94 and 8,417.06 is: 11,615.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.59 : 21,376.94 = 8,417.06 : x
  2. Step 2: Convert to fraction form
    15,490.59/21,376.94 = 8,417.06/x
  3. Step 3: Cross multiply
    15,490.59x = 21,376.94 × 8,417.06
  4. Step 4: Simplify right side
    15,490.59x = 179,930,986.60
  5. Step 5: Solve for x
    x = 179,930,986.60/15,490.59
  6. Step 6: Final answer
    x = 11,615.50

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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.