Home / 39,780.77-59,671.16-18,941.09

Finding the Fourth Proportional to 39,780.77, 59,671.16 and 18,941.09

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Solution

The fourth proportional to 39,780.77, 59,671.16 and 18,941.09 is: 28,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.77 : 59,671.16 = 18,941.09 : x
  2. Step 2: Convert to fraction form
    39,780.77/59,671.16 = 18,941.09/x
  3. Step 3: Cross multiply
    39,780.77x = 59,671.16 × 18,941.09
  4. Step 4: Simplify right side
    39,780.77x = 1,130,236,717.26
  5. Step 5: Solve for x
    x = 1,130,236,717.26/39,780.77
  6. Step 6: Final answer
    x = 28,411.64

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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.