Home / 13,485.68-20,125.54-12,009.45

Finding the Fourth Proportional to 13,485.68, 20,125.54 and 12,009.45

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Solution

The fourth proportional to 13,485.68, 20,125.54 and 12,009.45 is: 17,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.68 : 20,125.54 = 12,009.45 : x
  2. Step 2: Convert to fraction form
    13,485.68/20,125.54 = 12,009.45/x
  3. Step 3: Cross multiply
    13,485.68x = 20,125.54 × 12,009.45
  4. Step 4: Simplify right side
    13,485.68x = 241,696,666.35
  5. Step 5: Solve for x
    x = 241,696,666.35/13,485.68
  6. Step 6: Final answer
    x = 17,922.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.