Home / 38,718.74-53,430.84-21,721.57

Finding the Fourth Proportional to 38,718.74, 53,430.84 and 21,721.57

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Solution

The fourth proportional to 38,718.74, 53,430.84 and 21,721.57 is: 29,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718.74 : 53,430.84 = 21,721.57 : x
  2. Step 2: Convert to fraction form
    38,718.74/53,430.84 = 21,721.57/x
  3. Step 3: Cross multiply
    38,718.74x = 53,430.84 × 21,721.57
  4. Step 4: Simplify right side
    38,718.74x = 1,160,601,597.64
  5. Step 5: Solve for x
    x = 1,160,601,597.64/38,718.74
  6. Step 6: Final answer
    x = 29,975.19

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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.