Home / 30,386.34-45,579.51-12,856.32

Finding the Fourth Proportional to 30,386.34, 45,579.51 and 12,856.32

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Solution

The fourth proportional to 30,386.34, 45,579.51 and 12,856.32 is: 19,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.34 : 45,579.51 = 12,856.32 : x
  2. Step 2: Convert to fraction form
    30,386.34/45,579.51 = 12,856.32/x
  3. Step 3: Cross multiply
    30,386.34x = 45,579.51 × 12,856.32
  4. Step 4: Simplify right side
    30,386.34x = 585,984,766.00
  5. Step 5: Solve for x
    x = 585,984,766.00/30,386.34
  6. Step 6: Final answer
    x = 19,284.48

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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.