Home / 28,403.96-39,197.74-15,657.60

Finding the Fourth Proportional to 28,403.96, 39,197.74 and 15,657.60

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Solution

The fourth proportional to 28,403.96, 39,197.74 and 15,657.60 is: 21,607.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.96 : 39,197.74 = 15,657.60 : x
  2. Step 2: Convert to fraction form
    28,403.96/39,197.74 = 15,657.60/x
  3. Step 3: Cross multiply
    28,403.96x = 39,197.74 × 15,657.60
  4. Step 4: Simplify right side
    28,403.96x = 613,742,533.82
  5. Step 5: Solve for x
    x = 613,742,533.82/28,403.96
  6. Step 6: Final answer
    x = 21,607.64

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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.