Home / 20,569.14-28,385.93-12,615.75

Finding the Fourth Proportional to 20,569.14, 28,385.93 and 12,615.75

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Solution

The fourth proportional to 20,569.14, 28,385.93 and 12,615.75 is: 17,410.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.14 : 28,385.93 = 12,615.75 : x
  2. Step 2: Convert to fraction form
    20,569.14/28,385.93 = 12,615.75/x
  3. Step 3: Cross multiply
    20,569.14x = 28,385.93 × 12,615.75
  4. Step 4: Simplify right side
    20,569.14x = 358,109,733.32
  5. Step 5: Solve for x
    x = 358,109,733.32/20,569.14
  6. Step 6: Final answer
    x = 17,410.05

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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.