Home / 20,996.61-31,477.05-9,303.45

Finding the Fourth Proportional to 20,996.61, 31,477.05 and 9,303.45

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Solution

The fourth proportional to 20,996.61, 31,477.05 and 9,303.45 is: 13,947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.61 : 31,477.05 = 9,303.45 : x
  2. Step 2: Convert to fraction form
    20,996.61/31,477.05 = 9,303.45/x
  3. Step 3: Cross multiply
    20,996.61x = 31,477.05 × 9,303.45
  4. Step 4: Simplify right side
    20,996.61x = 292,845,160.82
  5. Step 5: Solve for x
    x = 292,845,160.82/20,996.61
  6. Step 6: Final answer
    x = 13,947.26

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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.