Home / 30,634.04-45,957.21-13,989.60

Finding the Fourth Proportional to 30,634.04, 45,957.21 and 13,989.60

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Solution

The fourth proportional to 30,634.04, 45,957.21 and 13,989.60 is: 20,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,634.04 : 45,957.21 = 13,989.60 : x
  2. Step 2: Convert to fraction form
    30,634.04/45,957.21 = 13,989.60/x
  3. Step 3: Cross multiply
    30,634.04x = 45,957.21 × 13,989.60
  4. Step 4: Simplify right side
    30,634.04x = 642,922,985.02
  5. Step 5: Solve for x
    x = 642,922,985.02/30,634.04
  6. Step 6: Final answer
    x = 20,987.21

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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.