Home / 15,447.91-21,317.96-8,641.85

Finding the Fourth Proportional to 15,447.91, 21,317.96 and 8,641.85

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Solution

The fourth proportional to 15,447.91, 21,317.96 and 8,641.85 is: 11,925.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.91 : 21,317.96 = 8,641.85 : x
  2. Step 2: Convert to fraction form
    15,447.91/21,317.96 = 8,641.85/x
  3. Step 3: Cross multiply
    15,447.91x = 21,317.96 × 8,641.85
  4. Step 4: Simplify right side
    15,447.91x = 184,226,612.63
  5. Step 5: Solve for x
    x = 184,226,612.63/15,447.91
  6. Step 6: Final answer
    x = 11,925.67

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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.