Home / 43,140.37-64,709.91-13,559.98

Finding the Fourth Proportional to 43,140.37, 64,709.91 and 13,559.98

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Solution

The fourth proportional to 43,140.37, 64,709.91 and 13,559.98 is: 20,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,140.37 : 64,709.91 = 13,559.98 : x
  2. Step 2: Convert to fraction form
    43,140.37/64,709.91 = 13,559.98/x
  3. Step 3: Cross multiply
    43,140.37x = 64,709.91 × 13,559.98
  4. Step 4: Simplify right side
    43,140.37x = 877,465,085.40
  5. Step 5: Solve for x
    x = 877,465,085.40/43,140.37
  6. Step 6: Final answer
    x = 20,339.77

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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.