Home / 12,923.64-19,384.38-5,130.36

Finding the Fourth Proportional to 12,923.64, 19,384.38 and 5,130.36

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Solution

The fourth proportional to 12,923.64, 19,384.38 and 5,130.36 is: 7,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.64 : 19,384.38 = 5,130.36 : x
  2. Step 2: Convert to fraction form
    12,923.64/19,384.38 = 5,130.36/x
  3. Step 3: Cross multiply
    12,923.64x = 19,384.38 × 5,130.36
  4. Step 4: Simplify right side
    12,923.64x = 99,448,847.78
  5. Step 5: Solve for x
    x = 99,448,847.78/12,923.64
  6. Step 6: Final answer
    x = 7,695.11

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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.