Home / 13,153.70-19,730.55-7,904.90

Finding the Fourth Proportional to 13,153.70, 19,730.55 and 7,904.90

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Solution

The fourth proportional to 13,153.70, 19,730.55 and 7,904.90 is: 11,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.70 : 19,730.55 = 7,904.90 : x
  2. Step 2: Convert to fraction form
    13,153.70/19,730.55 = 7,904.90/x
  3. Step 3: Cross multiply
    13,153.70x = 19,730.55 × 7,904.90
  4. Step 4: Simplify right side
    13,153.70x = 155,968,024.70
  5. Step 5: Solve for x
    x = 155,968,024.70/13,153.70
  6. Step 6: Final answer
    x = 11,857.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.