Home / 13,857.13-19,122.81-7,569.50

Finding the Fourth Proportional to 13,857.13, 19,122.81 and 7,569.50

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Solution

The fourth proportional to 13,857.13, 19,122.81 and 7,569.50 is: 10,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.13 : 19,122.81 = 7,569.50 : x
  2. Step 2: Convert to fraction form
    13,857.13/19,122.81 = 7,569.50/x
  3. Step 3: Cross multiply
    13,857.13x = 19,122.81 × 7,569.50
  4. Step 4: Simplify right side
    13,857.13x = 144,750,129.72
  5. Step 5: Solve for x
    x = 144,750,129.72/13,857.13
  6. Step 6: Final answer
    x = 10,445.90

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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.