Home / 14,008.80-21,009.15-5,123.10

Finding the Fourth Proportional to 14,008.80, 21,009.15 and 5,123.10

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Solution

The fourth proportional to 14,008.80, 21,009.15 and 5,123.10 is: 7,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.80 : 21,009.15 = 5,123.10 : x
  2. Step 2: Convert to fraction form
    14,008.80/21,009.15 = 5,123.10/x
  3. Step 3: Cross multiply
    14,008.80x = 21,009.15 × 5,123.10
  4. Step 4: Simplify right side
    14,008.80x = 107,631,976.37
  5. Step 5: Solve for x
    x = 107,631,976.37/14,008.80
  6. Step 6: Final answer
    x = 7,683.17

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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.