Home / 30,927.21-42,680.37-16,780.04

Finding the Fourth Proportional to 30,927.21, 42,680.37 and 16,780.04

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Solution

The fourth proportional to 30,927.21, 42,680.37 and 16,780.04 is: 23,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,927.21 : 42,680.37 = 16,780.04 : x
  2. Step 2: Convert to fraction form
    30,927.21/42,680.37 = 16,780.04/x
  3. Step 3: Cross multiply
    30,927.21x = 42,680.37 × 16,780.04
  4. Step 4: Simplify right side
    30,927.21x = 716,178,315.81
  5. Step 5: Solve for x
    x = 716,178,315.81/30,927.21
  6. Step 6: Final answer
    x = 23,156.90

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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.