Home / 15,206.07-20,984.47-8,491.77

Finding the Fourth Proportional to 15,206.07, 20,984.47 and 8,491.77

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Solution

The fourth proportional to 15,206.07, 20,984.47 and 8,491.77 is: 11,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.07 : 20,984.47 = 8,491.77 : x
  2. Step 2: Convert to fraction form
    15,206.07/20,984.47 = 8,491.77/x
  3. Step 3: Cross multiply
    15,206.07x = 20,984.47 × 8,491.77
  4. Step 4: Simplify right side
    15,206.07x = 178,195,292.81
  5. Step 5: Solve for x
    x = 178,195,292.81/15,206.07
  6. Step 6: Final answer
    x = 11,718.69

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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.