Home / 21,017.04-31,526.44-6,978.30

Finding the Fourth Proportional to 21,017.04, 31,526.44 and 6,978.30

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Solution

The fourth proportional to 21,017.04, 31,526.44 and 6,978.30 is: 10,467.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.04 : 31,526.44 = 6,978.30 : x
  2. Step 2: Convert to fraction form
    21,017.04/31,526.44 = 6,978.30/x
  3. Step 3: Cross multiply
    21,017.04x = 31,526.44 × 6,978.30
  4. Step 4: Simplify right side
    21,017.04x = 220,000,956.25
  5. Step 5: Solve for x
    x = 220,000,956.25/21,017.04
  6. Step 6: Final answer
    x = 10,467.74

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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.