Home / 19,783.68-27,323.76-13,485.12

Finding the Fourth Proportional to 19,783.68, 27,323.76 and 13,485.12

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Solution

The fourth proportional to 19,783.68, 27,323.76 and 13,485.12 is: 18,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.68 : 27,323.76 = 13,485.12 : x
  2. Step 2: Convert to fraction form
    19,783.68/27,323.76 = 13,485.12/x
  3. Step 3: Cross multiply
    19,783.68x = 27,323.76 × 13,485.12
  4. Step 4: Simplify right side
    19,783.68x = 368,464,182.45
  5. Step 5: Solve for x
    x = 368,464,182.45/19,783.68
  6. Step 6: Final answer
    x = 18,624.65

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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.