Home / 13,439.02-20,130.80-7,875.46

Finding the Fourth Proportional to 13,439.02, 20,130.80 and 7,875.46

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Solution

The fourth proportional to 13,439.02, 20,130.80 and 7,875.46 is: 11,796.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.02 : 20,130.80 = 7,875.46 : x
  2. Step 2: Convert to fraction form
    13,439.02/20,130.80 = 7,875.46/x
  3. Step 3: Cross multiply
    13,439.02x = 20,130.80 × 7,875.46
  4. Step 4: Simplify right side
    13,439.02x = 158,539,310.17
  5. Step 5: Solve for x
    x = 158,539,310.17/13,439.02
  6. Step 6: Final answer
    x = 11,796.94

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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.