Home / 13,782.49-19,018.60-9,312.23

Finding the Fourth Proportional to 13,782.49, 19,018.60 and 9,312.23

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Solution

The fourth proportional to 13,782.49, 19,018.60 and 9,312.23 is: 12,850.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.49 : 19,018.60 = 9,312.23 : x
  2. Step 2: Convert to fraction form
    13,782.49/19,018.60 = 9,312.23/x
  3. Step 3: Cross multiply
    13,782.49x = 19,018.60 × 9,312.23
  4. Step 4: Simplify right side
    13,782.49x = 177,105,601.74
  5. Step 5: Solve for x
    x = 177,105,601.74/13,782.49
  6. Step 6: Final answer
    x = 12,850.05

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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.