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Finding the Fourth Proportional to 30,065.64, 45,108.81 and 13,437.15

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Solution

The fourth proportional to 30,065.64, 45,108.81 and 13,437.15 is: 20,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,065.64 : 45,108.81 = 13,437.15 : x
  2. Step 2: Convert to fraction form
    30,065.64/45,108.81 = 13,437.15/x
  3. Step 3: Cross multiply
    30,065.64x = 45,108.81 × 13,437.15
  4. Step 4: Simplify right side
    30,065.64x = 606,133,846.29
  5. Step 5: Solve for x
    x = 606,133,846.29/30,065.64
  6. Step 6: Final answer
    x = 20,160.35

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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.