Home / 13,648.48-18,835.04-7,680.12

Finding the Fourth Proportional to 13,648.48, 18,835.04 and 7,680.12

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Solution

The fourth proportional to 13,648.48, 18,835.04 and 7,680.12 is: 10,598.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.48 : 18,835.04 = 7,680.12 : x
  2. Step 2: Convert to fraction form
    13,648.48/18,835.04 = 7,680.12/x
  3. Step 3: Cross multiply
    13,648.48x = 18,835.04 × 7,680.12
  4. Step 4: Simplify right side
    13,648.48x = 144,655,367.40
  5. Step 5: Solve for x
    x = 144,655,367.40/13,648.48
  6. Step 6: Final answer
    x = 10,598.64

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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.