Home / 15,021.06-20,722.16-9,717.59

Finding the Fourth Proportional to 15,021.06, 20,722.16 and 9,717.59

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Solution

The fourth proportional to 15,021.06, 20,722.16 and 9,717.59 is: 13,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.06 : 20,722.16 = 9,717.59 : x
  2. Step 2: Convert to fraction form
    15,021.06/20,722.16 = 9,717.59/x
  3. Step 3: Cross multiply
    15,021.06x = 20,722.16 × 9,717.59
  4. Step 4: Simplify right side
    15,021.06x = 201,369,302.60
  5. Step 5: Solve for x
    x = 201,369,302.60/15,021.06
  6. Step 6: Final answer
    x = 13,405.80

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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.