Home / 13,272.48-18,315.08-7,894.62

Finding the Fourth Proportional to 13,272.48, 18,315.08 and 7,894.62

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Solution

The fourth proportional to 13,272.48, 18,315.08 and 7,894.62 is: 10,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.48 : 18,315.08 = 7,894.62 : x
  2. Step 2: Convert to fraction form
    13,272.48/18,315.08 = 7,894.62/x
  3. Step 3: Cross multiply
    13,272.48x = 18,315.08 × 7,894.62
  4. Step 4: Simplify right side
    13,272.48x = 144,590,587.00
  5. Step 5: Solve for x
    x = 144,590,587.00/13,272.48
  6. Step 6: Final answer
    x = 10,894.01

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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.