Home / 19,319.61-28,990.19-10,434.76

Finding the Fourth Proportional to 19,319.61, 28,990.19 and 10,434.76

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Solution

The fourth proportional to 19,319.61, 28,990.19 and 10,434.76 is: 15,657.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.61 : 28,990.19 = 10,434.76 : x
  2. Step 2: Convert to fraction form
    19,319.61/28,990.19 = 10,434.76/x
  3. Step 3: Cross multiply
    19,319.61x = 28,990.19 × 10,434.76
  4. Step 4: Simplify right side
    19,319.61x = 302,505,675.00
  5. Step 5: Solve for x
    x = 302,505,675.00/19,319.61
  6. Step 6: Final answer
    x = 15,657.96

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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.