Home / 21,283,979.60-31,925,969.40-20,948,056.40

Finding the Fourth Proportional to 21,283,979.60, 31,925,969.40 and 20,948,056.40

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Solution

The fourth proportional to 21,283,979.60, 31,925,969.40 and 20,948,056.40 is: 31,422,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283,979.60 : 31,925,969.40 = 20,948,056.40 : x
  2. Step 2: Convert to fraction form
    21,283,979.60/31,925,969.40 = 20,948,056.40/x
  3. Step 3: Cross multiply
    21,283,979.60x = 31,925,969.40 × 20,948,056.40
  4. Step 4: Simplify right side
    21,283,979.60x = 668,787,007,615,874.12
  5. Step 5: Solve for x
    x = 668,787,007,615,874.12/21,283,979.60
  6. Step 6: Final answer
    x = 31,422,084.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.