Home / 15,518.07-21,415.32-8,444.88

Finding the Fourth Proportional to 15,518.07, 21,415.32 and 8,444.88

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Solution

The fourth proportional to 15,518.07, 21,415.32 and 8,444.88 is: 11,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.07 : 21,415.32 = 8,444.88 : x
  2. Step 2: Convert to fraction form
    15,518.07/21,415.32 = 8,444.88/x
  3. Step 3: Cross multiply
    15,518.07x = 21,415.32 × 8,444.88
  4. Step 4: Simplify right side
    15,518.07x = 180,849,807.56
  5. Step 5: Solve for x
    x = 180,849,807.56/15,518.07
  6. Step 6: Final answer
    x = 11,654.14

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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.