Home / 14,339.85-19,790.40-8,290.35

Finding the Fourth Proportional to 14,339.85, 19,790.40 and 8,290.35

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Solution

The fourth proportional to 14,339.85, 19,790.40 and 8,290.35 is: 11,441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,339.85 : 19,790.40 = 8,290.35 : x
  2. Step 2: Convert to fraction form
    14,339.85/19,790.40 = 8,290.35/x
  3. Step 3: Cross multiply
    14,339.85x = 19,790.40 × 8,290.35
  4. Step 4: Simplify right side
    14,339.85x = 164,069,350.41
  5. Step 5: Solve for x
    x = 164,069,350.41/14,339.85
  6. Step 6: Final answer
    x = 11,441.50

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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.