Home / 28,668.51-42,980.45-13,667.85

Finding the Fourth Proportional to 28,668.51, 42,980.45 and 13,667.85

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Solution

The fourth proportional to 28,668.51, 42,980.45 and 13,667.85 is: 20,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,668.51 : 42,980.45 = 13,667.85 : x
  2. Step 2: Convert to fraction form
    28,668.51/42,980.45 = 13,667.85/x
  3. Step 3: Cross multiply
    28,668.51x = 42,980.45 × 13,667.85
  4. Step 4: Simplify right side
    28,668.51x = 587,450,275.19
  5. Step 5: Solve for x
    x = 587,450,275.19/28,668.51
  6. Step 6: Final answer
    x = 20,491.13

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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.