Home / 21,275,285,661.60-31,912,928,492.40-12,459,317,200.80

Finding the Fourth Proportional to 21,275,285,661.60, 31,912,928,492.40 and 12,459,317,200.80

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Solution

The fourth proportional to 21,275,285,661.60, 31,912,928,492.40 and 12,459,317,200.80 is: 18,688,975,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,285,661.60 : 31,912,928,492.40 = 12,459,317,200.80 : x
  2. Step 2: Convert to fraction form
    21,275,285,661.60/31,912,928,492.40 = 12,459,317,200.80/x
  3. Step 3: Cross multiply
    21,275,285,661.60x = 31,912,928,492.40 × 12,459,317,200.80
  4. Step 4: Simplify right side
    21,275,285,661.60x = 397,613,298,893,259,735,040
  5. Step 5: Solve for x
    x = 397,613,298,893,259,735,040/21,275,285,661.60
  6. Step 6: Final answer
    x = 18,688,975,801.20

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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.