Home / 13,555.74-20,319.02-8,860.98

Finding the Fourth Proportional to 13,555.74, 20,319.02 and 8,860.98

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Solution

The fourth proportional to 13,555.74, 20,319.02 and 8,860.98 is: 13,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.74 : 20,319.02 = 8,860.98 : x
  2. Step 2: Convert to fraction form
    13,555.74/20,319.02 = 8,860.98/x
  3. Step 3: Cross multiply
    13,555.74x = 20,319.02 × 8,860.98
  4. Step 4: Simplify right side
    13,555.74x = 180,046,429.84
  5. Step 5: Solve for x
    x = 180,046,429.84/13,555.74
  6. Step 6: Final answer
    x = 13,281.93

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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.