Home / 30,385.72-45,550.86-10,653.40

Finding the Fourth Proportional to 30,385.72, 45,550.86 and 10,653.40

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Solution

The fourth proportional to 30,385.72, 45,550.86 and 10,653.40 is: 15,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.72 : 45,550.86 = 10,653.40 : x
  2. Step 2: Convert to fraction form
    30,385.72/45,550.86 = 10,653.40/x
  3. Step 3: Cross multiply
    30,385.72x = 45,550.86 × 10,653.40
  4. Step 4: Simplify right side
    30,385.72x = 485,271,531.92
  5. Step 5: Solve for x
    x = 485,271,531.92/30,385.72
  6. Step 6: Final answer
    x = 15,970.38

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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.