Home / 13,308.04-18,364.48-7,638.80

Finding the Fourth Proportional to 13,308.04, 18,364.48 and 7,638.80

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Solution

The fourth proportional to 13,308.04, 18,364.48 and 7,638.80 is: 10,541.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.04 : 18,364.48 = 7,638.80 : x
  2. Step 2: Convert to fraction form
    13,308.04/18,364.48 = 7,638.80/x
  3. Step 3: Cross multiply
    13,308.04x = 18,364.48 × 7,638.80
  4. Step 4: Simplify right side
    13,308.04x = 140,282,478.90
  5. Step 5: Solve for x
    x = 140,282,478.90/13,308.04
  6. Step 6: Final answer
    x = 10,541.18

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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.