Home / 21,013.04-31,521.58-6,970.08

Finding the Fourth Proportional to 21,013.04, 31,521.58 and 6,970.08

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Solution

The fourth proportional to 21,013.04, 31,521.58 and 6,970.08 is: 10,455.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.04 : 31,521.58 = 6,970.08 : x
  2. Step 2: Convert to fraction form
    21,013.04/31,521.58 = 6,970.08/x
  3. Step 3: Cross multiply
    21,013.04x = 31,521.58 × 6,970.08
  4. Step 4: Simplify right side
    21,013.04x = 219,707,934.33
  5. Step 5: Solve for x
    x = 219,707,934.33/21,013.04
  6. Step 6: Final answer
    x = 10,455.79

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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.