Home / 47,255.64-70,889.94-13,978.32

Finding the Fourth Proportional to 47,255.64, 70,889.94 and 13,978.32

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Solution

The fourth proportional to 47,255.64, 70,889.94 and 13,978.32 is: 20,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,255.64 : 70,889.94 = 13,978.32 : x
  2. Step 2: Convert to fraction form
    47,255.64/70,889.94 = 13,978.32/x
  3. Step 3: Cross multiply
    47,255.64x = 70,889.94 × 13,978.32
  4. Step 4: Simplify right side
    47,255.64x = 990,922,266.10
  5. Step 5: Solve for x
    x = 990,922,266.10/47,255.64
  6. Step 6: Final answer
    x = 20,969.40

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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.