Home / 15,558.24-21,470.64-8,484.72

Finding the Fourth Proportional to 15,558.24, 21,470.64 and 8,484.72

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Solution

The fourth proportional to 15,558.24, 21,470.64 and 8,484.72 is: 11,709.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.24 : 21,470.64 = 8,484.72 : x
  2. Step 2: Convert to fraction form
    15,558.24/21,470.64 = 8,484.72/x
  3. Step 3: Cross multiply
    15,558.24x = 21,470.64 × 8,484.72
  4. Step 4: Simplify right side
    15,558.24x = 182,172,368.62
  5. Step 5: Solve for x
    x = 182,172,368.62/15,558.24
  6. Step 6: Final answer
    x = 11,709.06

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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.