Home / 20,959.02-31,447.42-9,865.47

Finding the Fourth Proportional to 20,959.02, 31,447.42 and 9,865.47

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Solution

The fourth proportional to 20,959.02, 31,447.42 and 9,865.47 is: 14,802.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.02 : 31,447.42 = 9,865.47 : x
  2. Step 2: Convert to fraction form
    20,959.02/31,447.42 = 9,865.47/x
  3. Step 3: Cross multiply
    20,959.02x = 31,447.42 × 9,865.47
  4. Step 4: Simplify right side
    20,959.02x = 310,243,578.59
  5. Step 5: Solve for x
    x = 310,243,578.59/20,959.02
  6. Step 6: Final answer
    x = 14,802.39

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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.