Home / 21,370,905.60-32,012,812.80-13,258,982.40

Finding the Fourth Proportional to 21,370,905.60, 32,012,812.80 and 13,258,982.40

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Solution

The fourth proportional to 21,370,905.60, 32,012,812.80 and 13,258,982.40 is: 19,861,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370,905.60 : 32,012,812.80 = 13,258,982.40 : x
  2. Step 2: Convert to fraction form
    21,370,905.60/32,012,812.80 = 13,258,982.40/x
  3. Step 3: Cross multiply
    21,370,905.60x = 32,012,812.80 × 13,258,982.40
  4. Step 4: Simplify right side
    21,370,905.60x = 424,457,321,489,694.75
  5. Step 5: Solve for x
    x = 424,457,321,489,694.75/21,370,905.60
  6. Step 6: Final answer
    x = 19,861,456.95

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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.