Home / 38,518.65-53,152.71-21,290.29

Finding the Fourth Proportional to 38,518.65, 53,152.71 and 21,290.29

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Solution

The fourth proportional to 38,518.65, 53,152.71 and 21,290.29 is: 29,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.65 : 53,152.71 = 21,290.29 : x
  2. Step 2: Convert to fraction form
    38,518.65/53,152.71 = 21,290.29/x
  3. Step 3: Cross multiply
    38,518.65x = 53,152.71 × 21,290.29
  4. Step 4: Simplify right side
    38,518.65x = 1,131,636,497.13
  5. Step 5: Solve for x
    x = 1,131,636,497.13/38,518.65
  6. Step 6: Final answer
    x = 29,378.92

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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.