Home / 15,458.72-21,332.06-8,745.78

Finding the Fourth Proportional to 15,458.72, 21,332.06 and 8,745.78

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Solution

The fourth proportional to 15,458.72, 21,332.06 and 8,745.78 is: 12,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.72 : 21,332.06 = 8,745.78 : x
  2. Step 2: Convert to fraction form
    15,458.72/21,332.06 = 8,745.78/x
  3. Step 3: Cross multiply
    15,458.72x = 21,332.06 × 8,745.78
  4. Step 4: Simplify right side
    15,458.72x = 186,565,503.71
  5. Step 5: Solve for x
    x = 186,565,503.71/15,458.72
  6. Step 6: Final answer
    x = 12,068.63

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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.