Home / 30,470.81-42,048.93-16,859.36

Finding the Fourth Proportional to 30,470.81, 42,048.93 and 16,859.36

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Solution

The fourth proportional to 30,470.81, 42,048.93 and 16,859.36 is: 23,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.81 : 42,048.93 = 16,859.36 : x
  2. Step 2: Convert to fraction form
    30,470.81/42,048.93 = 16,859.36/x
  3. Step 3: Cross multiply
    30,470.81x = 42,048.93 × 16,859.36
  4. Step 4: Simplify right side
    30,470.81x = 708,917,838.24
  5. Step 5: Solve for x
    x = 708,917,838.24/30,470.81
  6. Step 6: Final answer
    x = 23,265.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.