Home / 15,542.58-21,423.14-10,999.40

Finding the Fourth Proportional to 15,542.58, 21,423.14 and 10,999.40

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Solution

The fourth proportional to 15,542.58, 21,423.14 and 10,999.40 is: 15,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.58 : 21,423.14 = 10,999.40 : x
  2. Step 2: Convert to fraction form
    15,542.58/21,423.14 = 10,999.40/x
  3. Step 3: Cross multiply
    15,542.58x = 21,423.14 × 10,999.40
  4. Step 4: Simplify right side
    15,542.58x = 235,641,686.12
  5. Step 5: Solve for x
    x = 235,641,686.12/15,542.58
  6. Step 6: Final answer
    x = 15,161.04

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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.