Home / 15,905.85-21,957.53-9,946.28

Finding the Fourth Proportional to 15,905.85, 21,957.53 and 9,946.28

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Solution

The fourth proportional to 15,905.85, 21,957.53 and 9,946.28 is: 13,730.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.85 : 21,957.53 = 9,946.28 : x
  2. Step 2: Convert to fraction form
    15,905.85/21,957.53 = 9,946.28/x
  3. Step 3: Cross multiply
    15,905.85x = 21,957.53 × 9,946.28
  4. Step 4: Simplify right side
    15,905.85x = 218,395,581.97
  5. Step 5: Solve for x
    x = 218,395,581.97/15,905.85
  6. Step 6: Final answer
    x = 13,730.52

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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.