Home / 28,014.76-38,643.78-19,668.52

Finding the Fourth Proportional to 28,014.76, 38,643.78 and 19,668.52

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Solution

The fourth proportional to 28,014.76, 38,643.78 and 19,668.52 is: 27,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.76 : 38,643.78 = 19,668.52 : x
  2. Step 2: Convert to fraction form
    28,014.76/38,643.78 = 19,668.52/x
  3. Step 3: Cross multiply
    28,014.76x = 38,643.78 × 19,668.52
  4. Step 4: Simplify right side
    28,014.76x = 760,065,959.81
  5. Step 5: Solve for x
    x = 760,065,959.81/28,014.76
  6. Step 6: Final answer
    x = 27,130.91

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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.