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Finding the Fourth Proportional to 30,125.79, 45,153.72 and 11,393.91

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Solution

The fourth proportional to 30,125.79, 45,153.72 and 11,393.91 is: 17,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,125.79 : 45,153.72 = 11,393.91 : x
  2. Step 2: Convert to fraction form
    30,125.79/45,153.72 = 11,393.91/x
  3. Step 3: Cross multiply
    30,125.79x = 45,153.72 × 11,393.91
  4. Step 4: Simplify right side
    30,125.79x = 514,477,421.85
  5. Step 5: Solve for x
    x = 514,477,421.85/30,125.79
  6. Step 6: Final answer
    x = 17,077.64

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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.