Home / 21,017.95-31,526.85-6,979.04

Finding the Fourth Proportional to 21,017.95, 31,526.85 and 6,979.04

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Solution

The fourth proportional to 21,017.95, 31,526.85 and 6,979.04 is: 10,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.95 : 31,526.85 = 6,979.04 : x
  2. Step 2: Convert to fraction form
    21,017.95/31,526.85 = 6,979.04/x
  3. Step 3: Cross multiply
    21,017.95x = 31,526.85 × 6,979.04
  4. Step 4: Simplify right side
    21,017.95x = 220,027,133.99
  5. Step 5: Solve for x
    x = 220,027,133.99/21,017.95
  6. Step 6: Final answer
    x = 10,468.54

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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.