Home / 15,798.24-21,817.76-13,119.17

Finding the Fourth Proportional to 15,798.24, 21,817.76 and 13,119.17

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Solution

The fourth proportional to 15,798.24, 21,817.76 and 13,119.17 is: 18,117.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.24 : 21,817.76 = 13,119.17 : x
  2. Step 2: Convert to fraction form
    15,798.24/21,817.76 = 13,119.17/x
  3. Step 3: Cross multiply
    15,798.24x = 21,817.76 × 13,119.17
  4. Step 4: Simplify right side
    15,798.24x = 286,230,727.77
  5. Step 5: Solve for x
    x = 286,230,727.77/15,798.24
  6. Step 6: Final answer
    x = 18,117.89

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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.