Home / 13,315.60-19,969.96-3,953.40

Finding the Fourth Proportional to 13,315.60, 19,969.96 and 3,953.40

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Solution

The fourth proportional to 13,315.60, 19,969.96 and 3,953.40 is: 5,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.60 : 19,969.96 = 3,953.40 : x
  2. Step 2: Convert to fraction form
    13,315.60/19,969.96 = 3,953.40/x
  3. Step 3: Cross multiply
    13,315.60x = 19,969.96 × 3,953.40
  4. Step 4: Simplify right side
    13,315.60x = 78,949,239.86
  5. Step 5: Solve for x
    x = 78,949,239.86/13,315.60
  6. Step 6: Final answer
    x = 5,929.08

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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.