Home / 20,386.79-30,578.81-5,594.47

Finding the Fourth Proportional to 20,386.79, 30,578.81 and 5,594.47

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Solution

The fourth proportional to 20,386.79, 30,578.81 and 5,594.47 is: 8,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.79 : 30,578.81 = 5,594.47 : x
  2. Step 2: Convert to fraction form
    20,386.79/30,578.81 = 5,594.47/x
  3. Step 3: Cross multiply
    20,386.79x = 30,578.81 × 5,594.47
  4. Step 4: Simplify right side
    20,386.79x = 171,072,172.72
  5. Step 5: Solve for x
    x = 171,072,172.72/20,386.79
  6. Step 6: Final answer
    x = 8,391.32

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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.