Home / 15,518.10-21,415.26-8,444.58

Finding the Fourth Proportional to 15,518.10, 21,415.26 and 8,444.58

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Solution

The fourth proportional to 15,518.10, 21,415.26 and 8,444.58 is: 11,653.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.10 : 21,415.26 = 8,444.58 : x
  2. Step 2: Convert to fraction form
    15,518.10/21,415.26 = 8,444.58/x
  3. Step 3: Cross multiply
    15,518.10x = 21,415.26 × 8,444.58
  4. Step 4: Simplify right side
    15,518.10x = 180,842,876.29
  5. Step 5: Solve for x
    x = 180,842,876.29/15,518.10
  6. Step 6: Final answer
    x = 11,653.67

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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.