Home / 13,989.90-20,985.52-4,630.74

Finding the Fourth Proportional to 13,989.90, 20,985.52 and 4,630.74

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Solution

The fourth proportional to 13,989.90, 20,985.52 and 4,630.74 is: 6,946.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.90 : 20,985.52 = 4,630.74 : x
  2. Step 2: Convert to fraction form
    13,989.90/20,985.52 = 4,630.74/x
  3. Step 3: Cross multiply
    13,989.90x = 20,985.52 × 4,630.74
  4. Step 4: Simplify right side
    13,989.90x = 97,178,486.88
  5. Step 5: Solve for x
    x = 97,178,486.88/13,989.90
  6. Step 6: Final answer
    x = 6,946.33

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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.