Home / 30,280.10-45,378.50-15,457.77

Finding the Fourth Proportional to 30,280.10, 45,378.50 and 15,457.77

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Solution

The fourth proportional to 30,280.10, 45,378.50 and 15,457.77 is: 23,165.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280.10 : 45,378.50 = 15,457.77 : x
  2. Step 2: Convert to fraction form
    30,280.10/45,378.50 = 15,457.77/x
  3. Step 3: Cross multiply
    30,280.10x = 45,378.50 × 15,457.77
  4. Step 4: Simplify right side
    30,280.10x = 701,450,338.66
  5. Step 5: Solve for x
    x = 701,450,338.66/30,280.10
  6. Step 6: Final answer
    x = 23,165.39

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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.