Home / 28,646.21-39,530.60-15,899.93

Finding the Fourth Proportional to 28,646.21, 39,530.60 and 15,899.93

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Solution

The fourth proportional to 28,646.21, 39,530.60 and 15,899.93 is: 21,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.21 : 39,530.60 = 15,899.93 : x
  2. Step 2: Convert to fraction form
    28,646.21/39,530.60 = 15,899.93/x
  3. Step 3: Cross multiply
    28,646.21x = 39,530.60 × 15,899.93
  4. Step 4: Simplify right side
    28,646.21x = 628,533,703.57
  5. Step 5: Solve for x
    x = 628,533,703.57/28,646.21
  6. Step 6: Final answer
    x = 21,941.25

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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.