Home / 20,593.50-30,931.58-12,289.72

Finding the Fourth Proportional to 20,593.50, 30,931.58 and 12,289.72

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Solution

The fourth proportional to 20,593.50, 30,931.58 and 12,289.72 is: 18,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.50 : 30,931.58 = 12,289.72 : x
  2. Step 2: Convert to fraction form
    20,593.50/30,931.58 = 12,289.72/x
  3. Step 3: Cross multiply
    20,593.50x = 30,931.58 × 12,289.72
  4. Step 4: Simplify right side
    20,593.50x = 380,140,457.36
  5. Step 5: Solve for x
    x = 380,140,457.36/20,593.50
  6. Step 6: Final answer
    x = 18,459.24

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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.