Home / 15,021.16-20,729.69-8,307.01

Finding the Fourth Proportional to 15,021.16, 20,729.69 and 8,307.01

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Solution

The fourth proportional to 15,021.16, 20,729.69 and 8,307.01 is: 11,463.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.16 : 20,729.69 = 8,307.01 : x
  2. Step 2: Convert to fraction form
    15,021.16/20,729.69 = 8,307.01/x
  3. Step 3: Cross multiply
    15,021.16x = 20,729.69 × 8,307.01
  4. Step 4: Simplify right side
    15,021.16x = 172,201,700.59
  5. Step 5: Solve for x
    x = 172,201,700.59/15,021.16
  6. Step 6: Final answer
    x = 11,463.94

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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.