Home / 12,310-16,988.16-6,721.36

Finding the Fourth Proportional to 12,310, 16,988.16 and 6,721.36

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Solution

The fourth proportional to 12,310, 16,988.16 and 6,721.36 is: 9,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310 : 16,988.16 = 6,721.36 : x
  2. Step 2: Convert to fraction form
    12,310/16,988.16 = 6,721.36/x
  3. Step 3: Cross multiply
    12,310x = 16,988.16 × 6,721.36
  4. Step 4: Simplify right side
    12,310x = 114,183,539.10
  5. Step 5: Solve for x
    x = 114,183,539.10/12,310
  6. Step 6: Final answer
    x = 9,275.67

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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.