Home / 28,354.48-39,128.86-15,607.38

Finding the Fourth Proportional to 28,354.48, 39,128.86 and 15,607.38

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Solution

The fourth proportional to 28,354.48, 39,128.86 and 15,607.38 is: 21,538.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.48 : 39,128.86 = 15,607.38 : x
  2. Step 2: Convert to fraction form
    28,354.48/39,128.86 = 15,607.38/x
  3. Step 3: Cross multiply
    28,354.48x = 39,128.86 × 15,607.38
  4. Step 4: Simplify right side
    28,354.48x = 610,699,197.13
  5. Step 5: Solve for x
    x = 610,699,197.13/28,354.48
  6. Step 6: Final answer
    x = 21,538.01

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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.