Home / 30,638.13-42,281.64-17,211.98

Finding the Fourth Proportional to 30,638.13, 42,281.64 and 17,211.98

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Solution

The fourth proportional to 30,638.13, 42,281.64 and 17,211.98 is: 23,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.13 : 42,281.64 = 17,211.98 : x
  2. Step 2: Convert to fraction form
    30,638.13/42,281.64 = 17,211.98/x
  3. Step 3: Cross multiply
    30,638.13x = 42,281.64 × 17,211.98
  4. Step 4: Simplify right side
    30,638.13x = 727,750,530.64
  5. Step 5: Solve for x
    x = 727,750,530.64/30,638.13
  6. Step 6: Final answer
    x = 23,753.10

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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.