Home / 27,784.81-38,346.47-20,698.93

Finding the Fourth Proportional to 27,784.81, 38,346.47 and 20,698.93

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Solution

The fourth proportional to 27,784.81, 38,346.47 and 20,698.93 is: 28,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,784.81 : 38,346.47 = 20,698.93 : x
  2. Step 2: Convert to fraction form
    27,784.81/38,346.47 = 20,698.93/x
  3. Step 3: Cross multiply
    27,784.81x = 38,346.47 × 20,698.93
  4. Step 4: Simplify right side
    27,784.81x = 793,730,776.54
  5. Step 5: Solve for x
    x = 793,730,776.54/27,784.81
  6. Step 6: Final answer
    x = 28,567.08

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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.