Home / 13,778.48-19,014.49-7,490.99

Finding the Fourth Proportional to 13,778.48, 19,014.49 and 7,490.99

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Solution

The fourth proportional to 13,778.48, 19,014.49 and 7,490.99 is: 10,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.48 : 19,014.49 = 7,490.99 : x
  2. Step 2: Convert to fraction form
    13,778.48/19,014.49 = 7,490.99/x
  3. Step 3: Cross multiply
    13,778.48x = 19,014.49 × 7,490.99
  4. Step 4: Simplify right side
    13,778.48x = 142,437,354.45
  5. Step 5: Solve for x
    x = 142,437,354.45/13,778.48
  6. Step 6: Final answer
    x = 10,337.67

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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.