Home / 13,445.02-18,555.78-8,141.68

Finding the Fourth Proportional to 13,445.02, 18,555.78 and 8,141.68

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Solution

The fourth proportional to 13,445.02, 18,555.78 and 8,141.68 is: 11,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.02 : 18,555.78 = 8,141.68 : x
  2. Step 2: Convert to fraction form
    13,445.02/18,555.78 = 8,141.68/x
  3. Step 3: Cross multiply
    13,445.02x = 18,555.78 × 8,141.68
  4. Step 4: Simplify right side
    13,445.02x = 151,075,222.91
  5. Step 5: Solve for x
    x = 151,075,222.91/13,445.02
  6. Step 6: Final answer
    x = 11,236.52

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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.