Home / 38,707.44-53,416.89-21,715.47

Finding the Fourth Proportional to 38,707.44, 53,416.89 and 21,715.47

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Solution

The fourth proportional to 38,707.44, 53,416.89 and 21,715.47 is: 29,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.44 : 53,416.89 = 21,715.47 : x
  2. Step 2: Convert to fraction form
    38,707.44/53,416.89 = 21,715.47/x
  3. Step 3: Cross multiply
    38,707.44x = 53,416.89 × 21,715.47
  4. Step 4: Simplify right side
    38,707.44x = 1,159,972,872.29
  5. Step 5: Solve for x
    x = 1,159,972,872.29/38,707.44
  6. Step 6: Final answer
    x = 29,967.70

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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.