Home / 38,986,342.70-53,799,021.47-21,341,831.90

Finding the Fourth Proportional to 38,986,342.70, 53,799,021.47 and 21,341,831.90

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Solution

The fourth proportional to 38,986,342.70, 53,799,021.47 and 21,341,831.90 is: 29,450,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986,342.70 : 53,799,021.47 = 21,341,831.90 : x
  2. Step 2: Convert to fraction form
    38,986,342.70/53,799,021.47 = 21,341,831.90/x
  3. Step 3: Cross multiply
    38,986,342.70x = 53,799,021.47 × 21,341,831.90
  4. Step 4: Simplify right side
    38,986,342.70x = 1,148,169,672,625,019.25
  5. Step 5: Solve for x
    x = 1,148,169,672,625,019.25/38,986,342.70
  6. Step 6: Final answer
    x = 29,450,561.23

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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.