Home / 13,623.75-18,802.40-8,918.46

Finding the Fourth Proportional to 13,623.75, 18,802.40 and 8,918.46

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Solution

The fourth proportional to 13,623.75, 18,802.40 and 8,918.46 is: 12,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.75 : 18,802.40 = 8,918.46 : x
  2. Step 2: Convert to fraction form
    13,623.75/18,802.40 = 8,918.46/x
  3. Step 3: Cross multiply
    13,623.75x = 18,802.40 × 8,918.46
  4. Step 4: Simplify right side
    13,623.75x = 167,688,407.71
  5. Step 5: Solve for x
    x = 167,688,407.71/13,623.75
  6. Step 6: Final answer
    x = 12,308.54

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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.