Home / 12,900.77-19,348.71-4,580.45

Finding the Fourth Proportional to 12,900.77, 19,348.71 and 4,580.45

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Solution

The fourth proportional to 12,900.77, 19,348.71 and 4,580.45 is: 6,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.77 : 19,348.71 = 4,580.45 : x
  2. Step 2: Convert to fraction form
    12,900.77/19,348.71 = 4,580.45/x
  3. Step 3: Cross multiply
    12,900.77x = 19,348.71 × 4,580.45
  4. Step 4: Simplify right side
    12,900.77x = 88,625,701.98
  5. Step 5: Solve for x
    x = 88,625,701.98/12,900.77
  6. Step 6: Final answer
    x = 6,869.80

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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.