Home / 20,730.02-31,094.91-5,147.64

Finding the Fourth Proportional to 20,730.02, 31,094.91 and 5,147.64

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Solution

The fourth proportional to 20,730.02, 31,094.91 and 5,147.64 is: 7,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.02 : 31,094.91 = 5,147.64 : x
  2. Step 2: Convert to fraction form
    20,730.02/31,094.91 = 5,147.64/x
  3. Step 3: Cross multiply
    20,730.02x = 31,094.91 × 5,147.64
  4. Step 4: Simplify right side
    20,730.02x = 160,065,402.51
  5. Step 5: Solve for x
    x = 160,065,402.51/20,730.02
  6. Step 6: Final answer
    x = 7,721.43

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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.