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Finding the Fourth Proportional to 21,871,866.40, 32,807,799.60 and 20,612,154.40

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Solution

The fourth proportional to 21,871,866.40, 32,807,799.60 and 20,612,154.40 is: 30,918,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871,866.40 : 32,807,799.60 = 20,612,154.40 : x
  2. Step 2: Convert to fraction form
    21,871,866.40/32,807,799.60 = 20,612,154.40/x
  3. Step 3: Cross multiply
    21,871,866.40x = 32,807,799.60 × 20,612,154.40
  4. Step 4: Simplify right side
    21,871,866.40x = 676,239,430,879,458.25
  5. Step 5: Solve for x
    x = 676,239,430,879,458.25/21,871,866.40
  6. Step 6: Final answer
    x = 30,918,231.60

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