Home / 30,897.20-42,638.09-16,750.05

Finding the Fourth Proportional to 30,897.20, 42,638.09 and 16,750.05

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Solution

The fourth proportional to 30,897.20, 42,638.09 and 16,750.05 is: 23,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,897.20 : 42,638.09 = 16,750.05 : x
  2. Step 2: Convert to fraction form
    30,897.20/42,638.09 = 16,750.05/x
  3. Step 3: Cross multiply
    30,897.20x = 42,638.09 × 16,750.05
  4. Step 4: Simplify right side
    30,897.20x = 714,190,139.40
  5. Step 5: Solve for x
    x = 714,190,139.40/30,897.20
  6. Step 6: Final answer
    x = 23,115.04

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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.