Home / 21,031.58-31,547.31-6,992.70

Finding the Fourth Proportional to 21,031.58, 31,547.31 and 6,992.70

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Solution

The fourth proportional to 21,031.58, 31,547.31 and 6,992.70 is: 10,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.58 : 31,547.31 = 6,992.70 : x
  2. Step 2: Convert to fraction form
    21,031.58/31,547.31 = 6,992.70/x
  3. Step 3: Cross multiply
    21,031.58x = 31,547.31 × 6,992.70
  4. Step 4: Simplify right side
    21,031.58x = 220,600,730.11
  5. Step 5: Solve for x
    x = 220,600,730.11/21,031.58
  6. Step 6: Final answer
    x = 10,489.02

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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.