Home / 30,258.78-45,374.40-12,719.04

Finding the Fourth Proportional to 30,258.78, 45,374.40 and 12,719.04

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Solution

The fourth proportional to 30,258.78, 45,374.40 and 12,719.04 is: 19,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.78 : 45,374.40 = 12,719.04 : x
  2. Step 2: Convert to fraction form
    30,258.78/45,374.40 = 12,719.04/x
  3. Step 3: Cross multiply
    30,258.78x = 45,374.40 × 12,719.04
  4. Step 4: Simplify right side
    30,258.78x = 577,118,808.58
  5. Step 5: Solve for x
    x = 577,118,808.58/30,258.78
  6. Step 6: Final answer
    x = 19,072.77

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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.