Home / 13,938.81-19,234.98-7,651.32

Finding the Fourth Proportional to 13,938.81, 19,234.98 and 7,651.32

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Solution

The fourth proportional to 13,938.81, 19,234.98 and 7,651.32 is: 10,558.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.81 : 19,234.98 = 7,651.32 : x
  2. Step 2: Convert to fraction form
    13,938.81/19,234.98 = 7,651.32/x
  3. Step 3: Cross multiply
    13,938.81x = 19,234.98 × 7,651.32
  4. Step 4: Simplify right side
    13,938.81x = 147,172,987.17
  5. Step 5: Solve for x
    x = 147,172,987.17/13,938.81
  6. Step 6: Final answer
    x = 10,558.50

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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.