Home / 20,985.60-28,957.10-12,033.48

Finding the Fourth Proportional to 20,985.60, 28,957.10 and 12,033.48

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Solution

The fourth proportional to 20,985.60, 28,957.10 and 12,033.48 is: 16,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.60 : 28,957.10 = 12,033.48 : x
  2. Step 2: Convert to fraction form
    20,985.60/28,957.10 = 12,033.48/x
  3. Step 3: Cross multiply
    20,985.60x = 28,957.10 × 12,033.48
  4. Step 4: Simplify right side
    20,985.60x = 348,454,683.71
  5. Step 5: Solve for x
    x = 348,454,683.71/20,985.60
  6. Step 6: Final answer
    x = 16,604.47

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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.