Home / 15,630.60-21,569.67-8,918.37

Finding the Fourth Proportional to 15,630.60, 21,569.67 and 8,918.37

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Solution

The fourth proportional to 15,630.60, 21,569.67 and 8,918.37 is: 12,307.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.60 : 21,569.67 = 8,918.37 : x
  2. Step 2: Convert to fraction form
    15,630.60/21,569.67 = 8,918.37/x
  3. Step 3: Cross multiply
    15,630.60x = 21,569.67 × 8,918.37
  4. Step 4: Simplify right side
    15,630.60x = 192,366,297.84
  5. Step 5: Solve for x
    x = 192,366,297.84/15,630.60
  6. Step 6: Final answer
    x = 12,307.03

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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.