Home / 20,784.16-31,176.16-5,201.68

Finding the Fourth Proportional to 20,784.16, 31,176.16 and 5,201.68

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Solution

The fourth proportional to 20,784.16, 31,176.16 and 5,201.68 is: 7,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.16 : 31,176.16 = 5,201.68 : x
  2. Step 2: Convert to fraction form
    20,784.16/31,176.16 = 5,201.68/x
  3. Step 3: Cross multiply
    20,784.16x = 31,176.16 × 5,201.68
  4. Step 4: Simplify right side
    20,784.16x = 162,168,407.95
  5. Step 5: Solve for x
    x = 162,168,407.95/20,784.16
  6. Step 6: Final answer
    x = 7,802.50

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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.