Home / 13,685.02-18,886.48-7,717.93

Finding the Fourth Proportional to 13,685.02, 18,886.48 and 7,717.93

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Solution

The fourth proportional to 13,685.02, 18,886.48 and 7,717.93 is: 10,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.02 : 18,886.48 = 7,717.93 : x
  2. Step 2: Convert to fraction form
    13,685.02/18,886.48 = 7,717.93/x
  3. Step 3: Cross multiply
    13,685.02x = 18,886.48 × 7,717.93
  4. Step 4: Simplify right side
    13,685.02x = 145,764,464.08
  5. Step 5: Solve for x
    x = 145,764,464.08/13,685.02
  6. Step 6: Final answer
    x = 10,651.39

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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.