Home / 18,970.57-28,455.83-5,643.52

Finding the Fourth Proportional to 18,970.57, 28,455.83 and 5,643.52

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Solution

The fourth proportional to 18,970.57, 28,455.83 and 5,643.52 is: 8,465.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.57 : 28,455.83 = 5,643.52 : x
  2. Step 2: Convert to fraction form
    18,970.57/28,455.83 = 5,643.52/x
  3. Step 3: Cross multiply
    18,970.57x = 28,455.83 × 5,643.52
  4. Step 4: Simplify right side
    18,970.57x = 160,590,946.36
  5. Step 5: Solve for x
    x = 160,590,946.36/18,970.57
  6. Step 6: Final answer
    x = 8,465.27

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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.