Home / 10,638.54-14,681.52-6,390.36

Finding the Fourth Proportional to 10,638.54, 14,681.52 and 6,390.36

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Solution

The fourth proportional to 10,638.54, 14,681.52 and 6,390.36 is: 8,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.54 : 14,681.52 = 6,390.36 : x
  2. Step 2: Convert to fraction form
    10,638.54/14,681.52 = 6,390.36/x
  3. Step 3: Cross multiply
    10,638.54x = 14,681.52 × 6,390.36
  4. Step 4: Simplify right side
    10,638.54x = 93,820,198.15
  5. Step 5: Solve for x
    x = 93,820,198.15/10,638.54
  6. Step 6: Final answer
    x = 8,818.90

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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.