Home / 28,084.78-38,756.74-15,509.26

Finding the Fourth Proportional to 28,084.78, 38,756.74 and 15,509.26

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Solution

The fourth proportional to 28,084.78, 38,756.74 and 15,509.26 is: 21,402.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.78 : 38,756.74 = 15,509.26 : x
  2. Step 2: Convert to fraction form
    28,084.78/38,756.74 = 15,509.26/x
  3. Step 3: Cross multiply
    28,084.78x = 38,756.74 × 15,509.26
  4. Step 4: Simplify right side
    28,084.78x = 601,088,357.41
  5. Step 5: Solve for x
    x = 601,088,357.41/28,084.78
  6. Step 6: Final answer
    x = 21,402.64

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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.