Home / 28,808.68-39,763.38-18,762.16

Finding the Fourth Proportional to 28,808.68, 39,763.38 and 18,762.16

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Solution

The fourth proportional to 28,808.68, 39,763.38 and 18,762.16 is: 25,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,808.68 : 39,763.38 = 18,762.16 : x
  2. Step 2: Convert to fraction form
    28,808.68/39,763.38 = 18,762.16/x
  3. Step 3: Cross multiply
    28,808.68x = 39,763.38 × 18,762.16
  4. Step 4: Simplify right side
    28,808.68x = 746,046,897.70
  5. Step 5: Solve for x
    x = 746,046,897.70/28,808.68
  6. Step 6: Final answer
    x = 25,896.60

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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.