Home / 13,315.86-19,970.35-3,953.66

Finding the Fourth Proportional to 13,315.86, 19,970.35 and 3,953.66

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Solution

The fourth proportional to 13,315.86, 19,970.35 and 3,953.66 is: 5,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.86 : 19,970.35 = 3,953.66 : x
  2. Step 2: Convert to fraction form
    13,315.86/19,970.35 = 3,953.66/x
  3. Step 3: Cross multiply
    13,315.86x = 19,970.35 × 3,953.66
  4. Step 4: Simplify right side
    13,315.86x = 78,955,973.98
  5. Step 5: Solve for x
    x = 78,955,973.98/13,315.86
  6. Step 6: Final answer
    x = 5,929.47

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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.