Home / 13,415.02-18,518.93-8,040.01

Finding the Fourth Proportional to 13,415.02, 18,518.93 and 8,040.01

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Solution

The fourth proportional to 13,415.02, 18,518.93 and 8,040.01 is: 11,098.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.02 : 18,518.93 = 8,040.01 : x
  2. Step 2: Convert to fraction form
    13,415.02/18,518.93 = 8,040.01/x
  3. Step 3: Cross multiply
    13,415.02x = 18,518.93 × 8,040.01
  4. Step 4: Simplify right side
    13,415.02x = 148,892,382.39
  5. Step 5: Solve for x
    x = 148,892,382.39/13,415.02
  6. Step 6: Final answer
    x = 11,098.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.