Home / 21,065.36-31,587.45-7,020.46

Finding the Fourth Proportional to 21,065.36, 31,587.45 and 7,020.46

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Solution

The fourth proportional to 21,065.36, 31,587.45 and 7,020.46 is: 10,527.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.36 : 31,587.45 = 7,020.46 : x
  2. Step 2: Convert to fraction form
    21,065.36/31,587.45 = 7,020.46/x
  3. Step 3: Cross multiply
    21,065.36x = 31,587.45 × 7,020.46
  4. Step 4: Simplify right side
    21,065.36x = 221,758,442.38
  5. Step 5: Solve for x
    x = 221,758,442.38/21,065.36
  6. Step 6: Final answer
    x = 10,527.16

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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.