Home / 13,007.40-19,511.10-6,438.20

Finding the Fourth Proportional to 13,007.40, 19,511.10 and 6,438.20

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Solution

The fourth proportional to 13,007.40, 19,511.10 and 6,438.20 is: 9,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.40 : 19,511.10 = 6,438.20 : x
  2. Step 2: Convert to fraction form
    13,007.40/19,511.10 = 6,438.20/x
  3. Step 3: Cross multiply
    13,007.40x = 19,511.10 × 6,438.20
  4. Step 4: Simplify right side
    13,007.40x = 125,616,364.02
  5. Step 5: Solve for x
    x = 125,616,364.02/13,007.40
  6. Step 6: Final answer
    x = 9,657.30

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Similar ratio
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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.