Home / 30,494.16-42,095.21-21,886.49

Finding the Fourth Proportional to 30,494.16, 42,095.21 and 21,886.49

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Solution

The fourth proportional to 30,494.16, 42,095.21 and 21,886.49 is: 30,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,494.16 : 42,095.21 = 21,886.49 : x
  2. Step 2: Convert to fraction form
    30,494.16/42,095.21 = 21,886.49/x
  3. Step 3: Cross multiply
    30,494.16x = 42,095.21 × 21,886.49
  4. Step 4: Simplify right side
    30,494.16x = 921,316,392.71
  5. Step 5: Solve for x
    x = 921,316,392.71/30,494.16
  6. Step 6: Final answer
    x = 30,212.88

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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.