Home / 12,688.16-19,031.41-4,372.16

Finding the Fourth Proportional to 12,688.16, 19,031.41 and 4,372.16

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Solution

The fourth proportional to 12,688.16, 19,031.41 and 4,372.16 is: 6,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.16 : 19,031.41 = 4,372.16 : x
  2. Step 2: Convert to fraction form
    12,688.16/19,031.41 = 4,372.16/x
  3. Step 3: Cross multiply
    12,688.16x = 19,031.41 × 4,372.16
  4. Step 4: Simplify right side
    12,688.16x = 83,208,369.55
  5. Step 5: Solve for x
    x = 83,208,369.55/12,688.16
  6. Step 6: Final answer
    x = 6,557.95

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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.