Home / 30,423.60-45,647.55-12,905.73

Finding the Fourth Proportional to 30,423.60, 45,647.55 and 12,905.73

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Solution

The fourth proportional to 30,423.60, 45,647.55 and 12,905.73 is: 19,363.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.60 : 45,647.55 = 12,905.73 : x
  2. Step 2: Convert to fraction form
    30,423.60/45,647.55 = 12,905.73/x
  3. Step 3: Cross multiply
    30,423.60x = 45,647.55 × 12,905.73
  4. Step 4: Simplify right side
    30,423.60x = 589,114,955.46
  5. Step 5: Solve for x
    x = 589,114,955.46/30,423.60
  6. Step 6: Final answer
    x = 19,363.75

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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.