Home / 30,815.04-42,521.64-17,889.84

Finding the Fourth Proportional to 30,815.04, 42,521.64 and 17,889.84

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Solution

The fourth proportional to 30,815.04, 42,521.64 and 17,889.84 is: 24,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.04 : 42,521.64 = 17,889.84 : x
  2. Step 2: Convert to fraction form
    30,815.04/42,521.64 = 17,889.84/x
  3. Step 3: Cross multiply
    30,815.04x = 42,521.64 × 17,889.84
  4. Step 4: Simplify right side
    30,815.04x = 760,705,336.14
  5. Step 5: Solve for x
    x = 760,705,336.14/30,815.04
  6. Step 6: Final answer
    x = 24,686.17

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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.