Home / 15,535.81-21,448.25-10,239.85

Finding the Fourth Proportional to 15,535.81, 21,448.25 and 10,239.85

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Solution

The fourth proportional to 15,535.81, 21,448.25 and 10,239.85 is: 14,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.81 : 21,448.25 = 10,239.85 : x
  2. Step 2: Convert to fraction form
    15,535.81/21,448.25 = 10,239.85/x
  3. Step 3: Cross multiply
    15,535.81x = 21,448.25 × 10,239.85
  4. Step 4: Simplify right side
    15,535.81x = 219,626,862.76
  5. Step 5: Solve for x
    x = 219,626,862.76/15,535.81
  6. Step 6: Final answer
    x = 14,136.81

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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.