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Finding the Fourth Proportional to 23,978.55, 35,970.90 and 12,870.01

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Solution

The fourth proportional to 23,978.55, 35,970.90 and 12,870.01 is: 19,306.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,978.55 : 35,970.90 = 12,870.01 : x
  2. Step 2: Convert to fraction form
    23,978.55/35,970.90 = 12,870.01/x
  3. Step 3: Cross multiply
    23,978.55x = 35,970.90 × 12,870.01
  4. Step 4: Simplify right side
    23,978.55x = 462,945,842.71
  5. Step 5: Solve for x
    x = 462,945,842.71/23,978.55
  6. Step 6: Final answer
    x = 19,306.67

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