Home / 19,314.21-28,987.71-7,635.63

Finding the Fourth Proportional to 19,314.21, 28,987.71 and 7,635.63

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Solution

The fourth proportional to 19,314.21, 28,987.71 and 7,635.63 is: 11,459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,314.21 : 28,987.71 = 7,635.63 : x
  2. Step 2: Convert to fraction form
    19,314.21/28,987.71 = 7,635.63/x
  3. Step 3: Cross multiply
    19,314.21x = 28,987.71 × 7,635.63
  4. Step 4: Simplify right side
    19,314.21x = 221,339,428.11
  5. Step 5: Solve for x
    x = 221,339,428.11/19,314.21
  6. Step 6: Final answer
    x = 11,459.93

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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.