Home / 13,312.88-19,969.48-6,385.76

Finding the Fourth Proportional to 13,312.88, 19,969.48 and 6,385.76

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Solution

The fourth proportional to 13,312.88, 19,969.48 and 6,385.76 is: 9,578.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.88 : 19,969.48 = 6,385.76 : x
  2. Step 2: Convert to fraction form
    13,312.88/19,969.48 = 6,385.76/x
  3. Step 3: Cross multiply
    13,312.88x = 19,969.48 × 6,385.76
  4. Step 4: Simplify right side
    13,312.88x = 127,520,306.60
  5. Step 5: Solve for x
    x = 127,520,306.60/13,312.88
  6. Step 6: Final answer
    x = 9,578.72

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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.