Home / 30,990.72-46,470.96-15,417.12

Finding the Fourth Proportional to 30,990.72, 46,470.96 and 15,417.12

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Solution

The fourth proportional to 30,990.72, 46,470.96 and 15,417.12 is: 23,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.72 : 46,470.96 = 15,417.12 : x
  2. Step 2: Convert to fraction form
    30,990.72/46,470.96 = 15,417.12/x
  3. Step 3: Cross multiply
    30,990.72x = 46,470.96 × 15,417.12
  4. Step 4: Simplify right side
    30,990.72x = 716,448,366.84
  5. Step 5: Solve for x
    x = 716,448,366.84/30,990.72
  6. Step 6: Final answer
    x = 23,118.16

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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.