Home / 21,865.04-32,790.56-7,070.80

Finding the Fourth Proportional to 21,865.04, 32,790.56 and 7,070.80

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Solution

The fourth proportional to 21,865.04, 32,790.56 and 7,070.80 is: 10,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.04 : 32,790.56 = 7,070.80 : x
  2. Step 2: Convert to fraction form
    21,865.04/32,790.56 = 7,070.80/x
  3. Step 3: Cross multiply
    21,865.04x = 32,790.56 × 7,070.80
  4. Step 4: Simplify right side
    21,865.04x = 231,855,491.65
  5. Step 5: Solve for x
    x = 231,855,491.65/21,865.04
  6. Step 6: Final answer
    x = 10,603.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.