Home / 19,776.48-29,635.56-18,668.40

Finding the Fourth Proportional to 19,776.48, 29,635.56 and 18,668.40

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Solution

The fourth proportional to 19,776.48, 29,635.56 and 18,668.40 is: 27,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.48 : 29,635.56 = 18,668.40 : x
  2. Step 2: Convert to fraction form
    19,776.48/29,635.56 = 18,668.40/x
  3. Step 3: Cross multiply
    19,776.48x = 29,635.56 × 18,668.40
  4. Step 4: Simplify right side
    19,776.48x = 553,248,488.30
  5. Step 5: Solve for x
    x = 553,248,488.30/19,776.48
  6. Step 6: Final answer
    x = 27,975.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.