Home / 21,065.19-31,587.20-7,020.30

Finding the Fourth Proportional to 21,065.19, 31,587.20 and 7,020.30

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Solution

The fourth proportional to 21,065.19, 31,587.20 and 7,020.30 is: 10,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.19 : 31,587.20 = 7,020.30 : x
  2. Step 2: Convert to fraction form
    21,065.19/31,587.20 = 7,020.30/x
  3. Step 3: Cross multiply
    21,065.19x = 31,587.20 × 7,020.30
  4. Step 4: Simplify right side
    21,065.19x = 221,751,637.71
  5. Step 5: Solve for x
    x = 221,751,637.71/21,065.19
  6. Step 6: Final answer
    x = 10,526.92

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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.