Home / 15,313.53-21,123.09-10,008.21

Finding the Fourth Proportional to 15,313.53, 21,123.09 and 10,008.21

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Solution

The fourth proportional to 15,313.53, 21,123.09 and 10,008.21 is: 13,805.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.53 : 21,123.09 = 10,008.21 : x
  2. Step 2: Convert to fraction form
    15,313.53/21,123.09 = 10,008.21/x
  3. Step 3: Cross multiply
    15,313.53x = 21,123.09 × 10,008.21
  4. Step 4: Simplify right side
    15,313.53x = 211,404,320.57
  5. Step 5: Solve for x
    x = 211,404,320.57/15,313.53
  6. Step 6: Final answer
    x = 13,805.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.