Home / 42,811.40-64,193.76-13,223.72

Finding the Fourth Proportional to 42,811.40, 64,193.76 and 13,223.72

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Solution

The fourth proportional to 42,811.40, 64,193.76 and 13,223.72 is: 19,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,811.40 : 64,193.76 = 13,223.72 : x
  2. Step 2: Convert to fraction form
    42,811.40/64,193.76 = 13,223.72/x
  3. Step 3: Cross multiply
    42,811.40x = 64,193.76 × 13,223.72
  4. Step 4: Simplify right side
    42,811.40x = 848,880,307.99
  5. Step 5: Solve for x
    x = 848,880,307.99/42,811.40
  6. Step 6: Final answer
    x = 19,828.37

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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.