Home / 13,113.02-19,659.80-7,917.68

Finding the Fourth Proportional to 13,113.02, 19,659.80 and 7,917.68

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Solution

The fourth proportional to 13,113.02, 19,659.80 and 7,917.68 is: 11,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.02 : 19,659.80 = 7,917.68 : x
  2. Step 2: Convert to fraction form
    13,113.02/19,659.80 = 7,917.68/x
  3. Step 3: Cross multiply
    13,113.02x = 19,659.80 × 7,917.68
  4. Step 4: Simplify right side
    13,113.02x = 155,660,005.26
  5. Step 5: Solve for x
    x = 155,660,005.26/13,113.02
  6. Step 6: Final answer
    x = 11,870.64

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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.