Home / 28,362.68-39,141.80-15,788.24

Finding the Fourth Proportional to 28,362.68, 39,141.80 and 15,788.24

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Solution

The fourth proportional to 28,362.68, 39,141.80 and 15,788.24 is: 21,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.68 : 39,141.80 = 15,788.24 : x
  2. Step 2: Convert to fraction form
    28,362.68/39,141.80 = 15,788.24/x
  3. Step 3: Cross multiply
    28,362.68x = 39,141.80 × 15,788.24
  4. Step 4: Simplify right side
    28,362.68x = 617,980,132.43
  5. Step 5: Solve for x
    x = 617,980,132.43/28,362.68
  6. Step 6: Final answer
    x = 21,788.50

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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.