Home / 21,188.34-31,779.81-5,607.18

Finding the Fourth Proportional to 21,188.34, 31,779.81 and 5,607.18

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Solution

The fourth proportional to 21,188.34, 31,779.81 and 5,607.18 is: 8,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.34 : 31,779.81 = 5,607.18 : x
  2. Step 2: Convert to fraction form
    21,188.34/31,779.81 = 5,607.18/x
  3. Step 3: Cross multiply
    21,188.34x = 31,779.81 × 5,607.18
  4. Step 4: Simplify right side
    21,188.34x = 178,195,115.04
  5. Step 5: Solve for x
    x = 178,195,115.04/21,188.34
  6. Step 6: Final answer
    x = 8,410.06

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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.