Home / 21,056.60-31,590.58-7,018.86

Finding the Fourth Proportional to 21,056.60, 31,590.58 and 7,018.86

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Solution

The fourth proportional to 21,056.60, 31,590.58 and 7,018.86 is: 10,530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.60 : 31,590.58 = 7,018.86 : x
  2. Step 2: Convert to fraction form
    21,056.60/31,590.58 = 7,018.86/x
  3. Step 3: Cross multiply
    21,056.60x = 31,590.58 × 7,018.86
  4. Step 4: Simplify right side
    21,056.60x = 221,729,858.34
  5. Step 5: Solve for x
    x = 221,729,858.34/21,056.60
  6. Step 6: Final answer
    x = 10,530.18

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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.