Home / 12,013.60-16,578.48-7,475.20

Finding the Fourth Proportional to 12,013.60, 16,578.48 and 7,475.20

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Solution

The fourth proportional to 12,013.60, 16,578.48 and 7,475.20 is: 10,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.60 : 16,578.48 = 7,475.20 : x
  2. Step 2: Convert to fraction form
    12,013.60/16,578.48 = 7,475.20/x
  3. Step 3: Cross multiply
    12,013.60x = 16,578.48 × 7,475.20
  4. Step 4: Simplify right side
    12,013.60x = 123,927,453.70
  5. Step 5: Solve for x
    x = 123,927,453.70/12,013.60
  6. Step 6: Final answer
    x = 10,315.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.