Home / 15,978.45-23,970.82-4,886.72

Finding the Fourth Proportional to 15,978.45, 23,970.82 and 4,886.72

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Solution

The fourth proportional to 15,978.45, 23,970.82 and 4,886.72 is: 7,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.45 : 23,970.82 = 4,886.72 : x
  2. Step 2: Convert to fraction form
    15,978.45/23,970.82 = 4,886.72/x
  3. Step 3: Cross multiply
    15,978.45x = 23,970.82 × 4,886.72
  4. Step 4: Simplify right side
    15,978.45x = 117,138,685.51
  5. Step 5: Solve for x
    x = 117,138,685.51/15,978.45
  6. Step 6: Final answer
    x = 7,331.04

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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.