Home / 28,651.40-39,536.95-15,903.58

Finding the Fourth Proportional to 28,651.40, 39,536.95 and 15,903.58

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Solution

The fourth proportional to 28,651.40, 39,536.95 and 15,903.58 is: 21,945.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.40 : 39,536.95 = 15,903.58 : x
  2. Step 2: Convert to fraction form
    28,651.40/39,536.95 = 15,903.58/x
  3. Step 3: Cross multiply
    28,651.40x = 39,536.95 × 15,903.58
  4. Step 4: Simplify right side
    28,651.40x = 628,779,047.28
  5. Step 5: Solve for x
    x = 628,779,047.28/28,651.40
  6. Step 6: Final answer
    x = 21,945.84

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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.