Home / 39,985.15-59,977.80-10,402.94

Finding the Fourth Proportional to 39,985.15, 59,977.80 and 10,402.94

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Solution

The fourth proportional to 39,985.15, 59,977.80 and 10,402.94 is: 15,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.15 : 59,977.80 = 10,402.94 : x
  2. Step 2: Convert to fraction form
    39,985.15/59,977.80 = 10,402.94/x
  3. Step 3: Cross multiply
    39,985.15x = 59,977.80 × 10,402.94
  4. Step 4: Simplify right side
    39,985.15x = 623,945,154.84
  5. Step 5: Solve for x
    x = 623,945,154.84/39,985.15
  6. Step 6: Final answer
    x = 15,604.42

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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.