Home / 30,156.30-45,283.05-20,339.10

Finding the Fourth Proportional to 30,156.30, 45,283.05 and 20,339.10

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Solution

The fourth proportional to 30,156.30, 45,283.05 and 20,339.10 is: 30,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.30 : 45,283.05 = 20,339.10 : x
  2. Step 2: Convert to fraction form
    30,156.30/45,283.05 = 20,339.10/x
  3. Step 3: Cross multiply
    30,156.30x = 45,283.05 × 20,339.10
  4. Step 4: Simplify right side
    30,156.30x = 921,016,482.26
  5. Step 5: Solve for x
    x = 921,016,482.26/30,156.30
  6. Step 6: Final answer
    x = 30,541.43

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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.