Home / 28,979.04-39,990.06-16,403.52

Finding the Fourth Proportional to 28,979.04, 39,990.06 and 16,403.52

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Solution

The fourth proportional to 28,979.04, 39,990.06 and 16,403.52 is: 22,636.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.04 : 39,990.06 = 16,403.52 : x
  2. Step 2: Convert to fraction form
    28,979.04/39,990.06 = 16,403.52/x
  3. Step 3: Cross multiply
    28,979.04x = 39,990.06 × 16,403.52
  4. Step 4: Simplify right side
    28,979.04x = 655,977,749.01
  5. Step 5: Solve for x
    x = 655,977,749.01/28,979.04
  6. Step 6: Final answer
    x = 22,636.28

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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.