Home / 28,225,348.36-38,972,921.04-21,688,674.28

Finding the Fourth Proportional to 28,225,348.36, 38,972,921.04 and 21,688,674.28

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Solution

The fourth proportional to 28,225,348.36, 38,972,921.04 and 21,688,674.28 is: 29,947,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225,348.36 : 38,972,921.04 = 21,688,674.28 : x
  2. Step 2: Convert to fraction form
    28,225,348.36/38,972,921.04 = 21,688,674.28/x
  3. Step 3: Cross multiply
    28,225,348.36x = 38,972,921.04 × 21,688,674.28
  4. Step 4: Simplify right side
    28,225,348.36x = 845,270,990,176,718.88
  5. Step 5: Solve for x
    x = 845,270,990,176,718.88/28,225,348.36
  6. Step 6: Final answer
    x = 29,947,229.68

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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.