Home / 21,947,378.40-30,286,985.33-12,157,792.25

Finding the Fourth Proportional to 21,947,378.40, 30,286,985.33 and 12,157,792.25

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Solution

The fourth proportional to 21,947,378.40, 30,286,985.33 and 12,157,792.25 is: 16,777,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947,378.40 : 30,286,985.33 = 12,157,792.25 : x
  2. Step 2: Convert to fraction form
    21,947,378.40/30,286,985.33 = 12,157,792.25/x
  3. Step 3: Cross multiply
    21,947,378.40x = 30,286,985.33 × 12,157,792.25
  4. Step 4: Simplify right side
    21,947,378.40x = 368,222,875,308,713.75
  5. Step 5: Solve for x
    x = 368,222,875,308,713.75/21,947,378.40
  6. Step 6: Final answer
    x = 16,777,533.45

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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.