Home / 28,700.36-39,609.32-15,957.90

Finding the Fourth Proportional to 28,700.36, 39,609.32 and 15,957.90

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Solution

The fourth proportional to 28,700.36, 39,609.32 and 15,957.90 is: 22,023.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.36 : 39,609.32 = 15,957.90 : x
  2. Step 2: Convert to fraction form
    28,700.36/39,609.32 = 15,957.90/x
  3. Step 3: Cross multiply
    28,700.36x = 39,609.32 × 15,957.90
  4. Step 4: Simplify right side
    28,700.36x = 632,081,567.63
  5. Step 5: Solve for x
    x = 632,081,567.63/28,700.36
  6. Step 6: Final answer
    x = 22,023.47

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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.