Home / 30,156.22-45,235.96-7,970.32

Finding the Fourth Proportional to 30,156.22, 45,235.96 and 7,970.32

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Solution

The fourth proportional to 30,156.22, 45,235.96 and 7,970.32 is: 11,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.22 : 45,235.96 = 7,970.32 : x
  2. Step 2: Convert to fraction form
    30,156.22/45,235.96 = 7,970.32/x
  3. Step 3: Cross multiply
    30,156.22x = 45,235.96 × 7,970.32
  4. Step 4: Simplify right side
    30,156.22x = 360,545,076.71
  5. Step 5: Solve for x
    x = 360,545,076.71/30,156.22
  6. Step 6: Final answer
    x = 11,955.91

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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.