Home / 14,288.72-21,439.20-7,368.08

Finding the Fourth Proportional to 14,288.72, 21,439.20 and 7,368.08

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Solution

The fourth proportional to 14,288.72, 21,439.20 and 7,368.08 is: 11,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.72 : 21,439.20 = 7,368.08 : x
  2. Step 2: Convert to fraction form
    14,288.72/21,439.20 = 7,368.08/x
  3. Step 3: Cross multiply
    14,288.72x = 21,439.20 × 7,368.08
  4. Step 4: Simplify right side
    14,288.72x = 157,965,740.74
  5. Step 5: Solve for x
    x = 157,965,740.74/14,288.72
  6. Step 6: Final answer
    x = 11,055.28

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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.