Home / 28,719.96-43,056.70-12,913.42

Finding the Fourth Proportional to 28,719.96, 43,056.70 and 12,913.42

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Solution

The fourth proportional to 28,719.96, 43,056.70 and 12,913.42 is: 19,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.96 : 43,056.70 = 12,913.42 : x
  2. Step 2: Convert to fraction form
    28,719.96/43,056.70 = 12,913.42/x
  3. Step 3: Cross multiply
    28,719.96x = 43,056.70 × 12,913.42
  4. Step 4: Simplify right side
    28,719.96x = 556,008,971.06
  5. Step 5: Solve for x
    x = 556,008,971.06/28,719.96
  6. Step 6: Final answer
    x = 19,359.67

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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.