Home / 15,883.04-21,918.61-8,809.46

Finding the Fourth Proportional to 15,883.04, 21,918.61 and 8,809.46

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Solution

The fourth proportional to 15,883.04, 21,918.61 and 8,809.46 is: 12,157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.04 : 21,918.61 = 8,809.46 : x
  2. Step 2: Convert to fraction form
    15,883.04/21,918.61 = 8,809.46/x
  3. Step 3: Cross multiply
    15,883.04x = 21,918.61 × 8,809.46
  4. Step 4: Simplify right side
    15,883.04x = 193,091,155.53
  5. Step 5: Solve for x
    x = 193,091,155.53/15,883.04
  6. Step 6: Final answer
    x = 12,157.07

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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.