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Finding the Fourth Proportional to 30,480.72, 45,682.08 and 15,686.88

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Solution

The fourth proportional to 30,480.72, 45,682.08 and 15,686.88 is: 23,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.72 : 45,682.08 = 15,686.88 : x
  2. Step 2: Convert to fraction form
    30,480.72/45,682.08 = 15,686.88/x
  3. Step 3: Cross multiply
    30,480.72x = 45,682.08 × 15,686.88
  4. Step 4: Simplify right side
    30,480.72x = 716,609,307.11
  5. Step 5: Solve for x
    x = 716,609,307.11/30,480.72
  6. Step 6: Final answer
    x = 23,510.25

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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.