Home / 15,322.13-21,130.49-9,938.96

Finding the Fourth Proportional to 15,322.13, 21,130.49 and 9,938.96

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Solution

The fourth proportional to 15,322.13, 21,130.49 and 9,938.96 is: 13,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.13 : 21,130.49 = 9,938.96 : x
  2. Step 2: Convert to fraction form
    15,322.13/21,130.49 = 9,938.96/x
  3. Step 3: Cross multiply
    15,322.13x = 21,130.49 × 9,938.96
  4. Step 4: Simplify right side
    15,322.13x = 210,015,014.09
  5. Step 5: Solve for x
    x = 210,015,014.09/15,322.13
  6. Step 6: Final answer
    x = 13,706.65

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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.