Home / 20,985.84-31,484.21-9,296.28

Finding the Fourth Proportional to 20,985.84, 31,484.21 and 9,296.28

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Solution

The fourth proportional to 20,985.84, 31,484.21 and 9,296.28 is: 13,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.84 : 31,484.21 = 9,296.28 : x
  2. Step 2: Convert to fraction form
    20,985.84/31,484.21 = 9,296.28/x
  3. Step 3: Cross multiply
    20,985.84x = 31,484.21 × 9,296.28
  4. Step 4: Simplify right side
    20,985.84x = 292,685,985.26
  5. Step 5: Solve for x
    x = 292,685,985.26/20,985.84
  6. Step 6: Final answer
    x = 13,946.83

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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.