Home / 12,623.04-18,918.72-5,688

Finding the Fourth Proportional to 12,623.04, 18,918.72 and 5,688

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Solution

The fourth proportional to 12,623.04, 18,918.72 and 5,688 is: 8,524.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.04 : 18,918.72 = 5,688 : x
  2. Step 2: Convert to fraction form
    12,623.04/18,918.72 = 5,688/x
  3. Step 3: Cross multiply
    12,623.04x = 18,918.72 × 5,688
  4. Step 4: Simplify right side
    12,623.04x = 107,609,679.36
  5. Step 5: Solve for x
    x = 107,609,679.36/12,623.04
  6. Step 6: Final answer
    x = 8,524.86

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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.