Home / 31,802.02-43,906.95-20,475.70

Finding the Fourth Proportional to 31,802.02, 43,906.95 and 20,475.70

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Solution

The fourth proportional to 31,802.02, 43,906.95 and 20,475.70 is: 28,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,802.02 : 43,906.95 = 20,475.70 : x
  2. Step 2: Convert to fraction form
    31,802.02/43,906.95 = 20,475.70/x
  3. Step 3: Cross multiply
    31,802.02x = 43,906.95 × 20,475.70
  4. Step 4: Simplify right side
    31,802.02x = 899,025,536.12
  5. Step 5: Solve for x
    x = 899,025,536.12/31,802.02
  6. Step 6: Final answer
    x = 28,269.45

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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.