Home / 13,317.76-19,970.46-7,772.70

Finding the Fourth Proportional to 13,317.76, 19,970.46 and 7,772.70

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Solution

The fourth proportional to 13,317.76, 19,970.46 and 7,772.70 is: 11,655.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.76 : 19,970.46 = 7,772.70 : x
  2. Step 2: Convert to fraction form
    13,317.76/19,970.46 = 7,772.70/x
  3. Step 3: Cross multiply
    13,317.76x = 19,970.46 × 7,772.70
  4. Step 4: Simplify right side
    13,317.76x = 155,224,394.44
  5. Step 5: Solve for x
    x = 155,224,394.44/13,317.76
  6. Step 6: Final answer
    x = 11,655.44

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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.