Home / 20,343.60-30,533.40-12,013.20

Finding the Fourth Proportional to 20,343.60, 30,533.40 and 12,013.20

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Solution

The fourth proportional to 20,343.60, 30,533.40 and 12,013.20 is: 18,030.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.60 : 30,533.40 = 12,013.20 : x
  2. Step 2: Convert to fraction form
    20,343.60/30,533.40 = 12,013.20/x
  3. Step 3: Cross multiply
    20,343.60x = 30,533.40 × 12,013.20
  4. Step 4: Simplify right side
    20,343.60x = 366,803,840.88
  5. Step 5: Solve for x
    x = 366,803,840.88/20,343.60
  6. Step 6: Final answer
    x = 18,030.43

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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.