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Finding the Fourth Proportional to 15,883.18, 21,918.23 and 8,810.26

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Solution

The fourth proportional to 15,883.18, 21,918.23 and 8,810.26 is: 12,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.18 : 21,918.23 = 8,810.26 : x
  2. Step 2: Convert to fraction form
    15,883.18/21,918.23 = 8,810.26/x
  3. Step 3: Cross multiply
    15,883.18x = 21,918.23 × 8,810.26
  4. Step 4: Simplify right side
    15,883.18x = 193,105,206.19
  5. Step 5: Solve for x
    x = 193,105,206.19/15,883.18
  6. Step 6: Final answer
    x = 12,157.84

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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.