Home / 19,071.72-28,421.01-18,444.78

Finding the Fourth Proportional to 19,071.72, 28,421.01 and 18,444.78

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Solution

The fourth proportional to 19,071.72, 28,421.01 and 18,444.78 is: 27,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.72 : 28,421.01 = 18,444.78 : x
  2. Step 2: Convert to fraction form
    19,071.72/28,421.01 = 18,444.78/x
  3. Step 3: Cross multiply
    19,071.72x = 28,421.01 × 18,444.78
  4. Step 4: Simplify right side
    19,071.72x = 524,219,276.83
  5. Step 5: Solve for x
    x = 524,219,276.83/19,071.72
  6. Step 6: Final answer
    x = 27,486.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.