Home / 14,289.60-21,396-11,646.30

Finding the Fourth Proportional to 14,289.60, 21,396 and 11,646.30

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Solution

The fourth proportional to 14,289.60, 21,396 and 11,646.30 is: 17,438.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.60 : 21,396 = 11,646.30 : x
  2. Step 2: Convert to fraction form
    14,289.60/21,396 = 11,646.30/x
  3. Step 3: Cross multiply
    14,289.60x = 21,396 × 11,646.30
  4. Step 4: Simplify right side
    14,289.60x = 249,184,234.80
  5. Step 5: Solve for x
    x = 249,184,234.80/14,289.60
  6. Step 6: Final answer
    x = 17,438.15

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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.