Home / 15,313.14-21,116.59-14,420.21

Finding the Fourth Proportional to 15,313.14, 21,116.59 and 14,420.21

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Solution

The fourth proportional to 15,313.14, 21,116.59 and 14,420.21 is: 19,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.14 : 21,116.59 = 14,420.21 : x
  2. Step 2: Convert to fraction form
    15,313.14/21,116.59 = 14,420.21/x
  3. Step 3: Cross multiply
    15,313.14x = 21,116.59 × 14,420.21
  4. Step 4: Simplify right side
    15,313.14x = 304,505,679.02
  5. Step 5: Solve for x
    x = 304,505,679.02/15,313.14
  6. Step 6: Final answer
    x = 19,885.25

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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.