Home / 28,125.08-38,812.64-15,378.32

Finding the Fourth Proportional to 28,125.08, 38,812.64 and 15,378.32

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Solution

The fourth proportional to 28,125.08, 38,812.64 and 15,378.32 is: 21,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.08 : 38,812.64 = 15,378.32 : x
  2. Step 2: Convert to fraction form
    28,125.08/38,812.64 = 15,378.32/x
  3. Step 3: Cross multiply
    28,125.08x = 38,812.64 × 15,378.32
  4. Step 4: Simplify right side
    28,125.08x = 596,873,021.92
  5. Step 5: Solve for x
    x = 596,873,021.92/28,125.08
  6. Step 6: Final answer
    x = 21,222.09

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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.