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Finding the Fourth Proportional to 30,686.80, 46,030.20 and 16,923.28

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Solution

The fourth proportional to 30,686.80, 46,030.20 and 16,923.28 is: 25,384.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.80 : 46,030.20 = 16,923.28 : x
  2. Step 2: Convert to fraction form
    30,686.80/46,030.20 = 16,923.28/x
  3. Step 3: Cross multiply
    30,686.80x = 46,030.20 × 16,923.28
  4. Step 4: Simplify right side
    30,686.80x = 778,981,963.06
  5. Step 5: Solve for x
    x = 778,981,963.06/30,686.80
  6. Step 6: Final answer
    x = 25,384.92

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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.