Home / 13,938.18-19,234.70-7,564.77

Finding the Fourth Proportional to 13,938.18, 19,234.70 and 7,564.77

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Solution

The fourth proportional to 13,938.18, 19,234.70 and 7,564.77 is: 10,439.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.18 : 19,234.70 = 7,564.77 : x
  2. Step 2: Convert to fraction form
    13,938.18/19,234.70 = 7,564.77/x
  3. Step 3: Cross multiply
    13,938.18x = 19,234.70 × 7,564.77
  4. Step 4: Simplify right side
    13,938.18x = 145,506,043.70
  5. Step 5: Solve for x
    x = 145,506,043.70/13,938.18
  6. Step 6: Final answer
    x = 10,439.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.