Home / 15,891.03-21,933.65-10,857.29

Finding the Fourth Proportional to 15,891.03, 21,933.65 and 10,857.29

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Solution

The fourth proportional to 15,891.03, 21,933.65 and 10,857.29 is: 14,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.03 : 21,933.65 = 10,857.29 : x
  2. Step 2: Convert to fraction form
    15,891.03/21,933.65 = 10,857.29/x
  3. Step 3: Cross multiply
    15,891.03x = 21,933.65 × 10,857.29
  4. Step 4: Simplify right side
    15,891.03x = 238,139,916.28
  5. Step 5: Solve for x
    x = 238,139,916.28/15,891.03
  6. Step 6: Final answer
    x = 14,985.81

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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.