Home / 18,962.58-28,420.77-13,417.50

Finding the Fourth Proportional to 18,962.58, 28,420.77 and 13,417.50

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Solution

The fourth proportional to 18,962.58, 28,420.77 and 13,417.50 is: 20,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.58 : 28,420.77 = 13,417.50 : x
  2. Step 2: Convert to fraction form
    18,962.58/28,420.77 = 13,417.50/x
  3. Step 3: Cross multiply
    18,962.58x = 28,420.77 × 13,417.50
  4. Step 4: Simplify right side
    18,962.58x = 381,335,681.48
  5. Step 5: Solve for x
    x = 381,335,681.48/18,962.58
  6. Step 6: Final answer
    x = 20,109.90

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1.5x scale

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.