Home / 15,374.19-21,216.47-8,659.91

Finding the Fourth Proportional to 15,374.19, 21,216.47 and 8,659.91

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Solution

The fourth proportional to 15,374.19, 21,216.47 and 8,659.91 is: 11,950.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.19 : 21,216.47 = 8,659.91 : x
  2. Step 2: Convert to fraction form
    15,374.19/21,216.47 = 8,659.91/x
  3. Step 3: Cross multiply
    15,374.19x = 21,216.47 × 8,659.91
  4. Step 4: Simplify right side
    15,374.19x = 183,732,571.34
  5. Step 5: Solve for x
    x = 183,732,571.34/15,374.19
  6. Step 6: Final answer
    x = 11,950.72

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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.