Home / 21,035.95-31,547.08-6,992.21

Finding the Fourth Proportional to 21,035.95, 31,547.08 and 6,992.21

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Solution

The fourth proportional to 21,035.95, 31,547.08 and 6,992.21 is: 10,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.95 : 31,547.08 = 6,992.21 : x
  2. Step 2: Convert to fraction form
    21,035.95/31,547.08 = 6,992.21/x
  3. Step 3: Cross multiply
    21,035.95x = 31,547.08 × 6,992.21
  4. Step 4: Simplify right side
    21,035.95x = 220,583,790.77
  5. Step 5: Solve for x
    x = 220,583,790.77/21,035.95
  6. Step 6: Final answer
    x = 10,486.04

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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.