Home / 13,021.32-19,532.90-6,445.74

Finding the Fourth Proportional to 13,021.32, 19,532.90 and 6,445.74

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Solution

The fourth proportional to 13,021.32, 19,532.90 and 6,445.74 is: 9,669.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.32 : 19,532.90 = 6,445.74 : x
  2. Step 2: Convert to fraction form
    13,021.32/19,532.90 = 6,445.74/x
  3. Step 3: Cross multiply
    13,021.32x = 19,532.90 × 6,445.74
  4. Step 4: Simplify right side
    13,021.32x = 125,904,011.45
  5. Step 5: Solve for x
    x = 125,904,011.45/13,021.32
  6. Step 6: Final answer
    x = 9,669.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.