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Finding the Fourth Proportional to 12,957.93, 17,875.26 and 8,709.93

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Solution

The fourth proportional to 12,957.93, 17,875.26 and 8,709.93 is: 12,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.93 : 17,875.26 = 8,709.93 : x
  2. Step 2: Convert to fraction form
    12,957.93/17,875.26 = 8,709.93/x
  3. Step 3: Cross multiply
    12,957.93x = 17,875.26 × 8,709.93
  4. Step 4: Simplify right side
    12,957.93x = 155,692,263.33
  5. Step 5: Solve for x
    x = 155,692,263.33/12,957.93
  6. Step 6: Final answer
    x = 12,015.21

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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.