Home / 15,320.07-21,142.20-8,606.99

Finding the Fourth Proportional to 15,320.07, 21,142.20 and 8,606.99

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Solution

The fourth proportional to 15,320.07, 21,142.20 and 8,606.99 is: 11,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.07 : 21,142.20 = 8,606.99 : x
  2. Step 2: Convert to fraction form
    15,320.07/21,142.20 = 8,606.99/x
  3. Step 3: Cross multiply
    15,320.07x = 21,142.20 × 8,606.99
  4. Step 4: Simplify right side
    15,320.07x = 181,970,703.98
  5. Step 5: Solve for x
    x = 181,970,703.98/15,320.07
  6. Step 6: Final answer
    x = 11,877.93

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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.