Home / 14,432.40-19,920.48-9,409.08

Finding the Fourth Proportional to 14,432.40, 19,920.48 and 9,409.08

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Solution

The fourth proportional to 14,432.40, 19,920.48 and 9,409.08 is: 12,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,432.40 : 19,920.48 = 9,409.08 : x
  2. Step 2: Convert to fraction form
    14,432.40/19,920.48 = 9,409.08/x
  3. Step 3: Cross multiply
    14,432.40x = 19,920.48 × 9,409.08
  4. Step 4: Simplify right side
    14,432.40x = 187,433,389.96
  5. Step 5: Solve for x
    x = 187,433,389.96/14,432.40
  6. Step 6: Final answer
    x = 12,986.99

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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.