Home / 30,583.17-42,215.28-19,271.72

Finding the Fourth Proportional to 30,583.17, 42,215.28 and 19,271.72

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Solution

The fourth proportional to 30,583.17, 42,215.28 and 19,271.72 is: 26,601.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,583.17 : 42,215.28 = 19,271.72 : x
  2. Step 2: Convert to fraction form
    30,583.17/42,215.28 = 19,271.72/x
  3. Step 3: Cross multiply
    30,583.17x = 42,215.28 × 19,271.72
  4. Step 4: Simplify right side
    30,583.17x = 813,561,089.15
  5. Step 5: Solve for x
    x = 813,561,089.15/30,583.17
  6. Step 6: Final answer
    x = 26,601.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.