Home / 12,678.04-19,019.94-4,887.28

Finding the Fourth Proportional to 12,678.04, 19,019.94 and 4,887.28

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Solution

The fourth proportional to 12,678.04, 19,019.94 and 4,887.28 is: 7,332.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.04 : 19,019.94 = 4,887.28 : x
  2. Step 2: Convert to fraction form
    12,678.04/19,019.94 = 4,887.28/x
  3. Step 3: Cross multiply
    12,678.04x = 19,019.94 × 4,887.28
  4. Step 4: Simplify right side
    12,678.04x = 92,955,772.36
  5. Step 5: Solve for x
    x = 92,955,772.36/12,678.04
  6. Step 6: Final answer
    x = 7,332.03

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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.