Home / 15,381.69-21,088.29-15,101.43

Finding the Fourth Proportional to 15,381.69, 21,088.29 and 15,101.43

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Solution

The fourth proportional to 15,381.69, 21,088.29 and 15,101.43 is: 20,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.69 : 21,088.29 = 15,101.43 : x
  2. Step 2: Convert to fraction form
    15,381.69/21,088.29 = 15,101.43/x
  3. Step 3: Cross multiply
    15,381.69x = 21,088.29 × 15,101.43
  4. Step 4: Simplify right side
    15,381.69x = 318,463,259.75
  5. Step 5: Solve for x
    x = 318,463,259.75/15,381.69
  6. Step 6: Final answer
    x = 20,704.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.