Home / 43,010.08-64,515.12-13,430.45

Finding the Fourth Proportional to 43,010.08, 64,515.12 and 13,430.45

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Solution

The fourth proportional to 43,010.08, 64,515.12 and 13,430.45 is: 20,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,010.08 : 64,515.12 = 13,430.45 : x
  2. Step 2: Convert to fraction form
    43,010.08/64,515.12 = 13,430.45/x
  3. Step 3: Cross multiply
    43,010.08x = 64,515.12 × 13,430.45
  4. Step 4: Simplify right side
    43,010.08x = 866,466,841.43
  5. Step 5: Solve for x
    x = 866,466,841.43/43,010.08
  6. Step 6: Final answer
    x = 20,145.67

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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.