Home / 21,017.61-31,526.84-8,529.08

Finding the Fourth Proportional to 21,017.61, 31,526.84 and 8,529.08

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Solution

The fourth proportional to 21,017.61, 31,526.84 and 8,529.08 is: 12,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.61 : 31,526.84 = 8,529.08 : x
  2. Step 2: Convert to fraction form
    21,017.61/31,526.84 = 8,529.08/x
  3. Step 3: Cross multiply
    21,017.61x = 31,526.84 × 8,529.08
  4. Step 4: Simplify right side
    21,017.61x = 268,894,804.20
  5. Step 5: Solve for x
    x = 268,894,804.20/21,017.61
  6. Step 6: Final answer
    x = 12,793.79

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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.