Home / 30,663.97-45,904.28-18,780.32

Finding the Fourth Proportional to 30,663.97, 45,904.28 and 18,780.32

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Solution

The fourth proportional to 30,663.97, 45,904.28 and 18,780.32 is: 28,114.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.97 : 45,904.28 = 18,780.32 : x
  2. Step 2: Convert to fraction form
    30,663.97/45,904.28 = 18,780.32/x
  3. Step 3: Cross multiply
    30,663.97x = 45,904.28 × 18,780.32
  4. Step 4: Simplify right side
    30,663.97x = 862,097,088.63
  5. Step 5: Solve for x
    x = 862,097,088.63/30,663.97
  6. Step 6: Final answer
    x = 28,114.34

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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.