Home / 19,126.98-28,688.85-6,643.80

Finding the Fourth Proportional to 19,126.98, 28,688.85 and 6,643.80

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Solution

The fourth proportional to 19,126.98, 28,688.85 and 6,643.80 is: 9,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,126.98 : 28,688.85 = 6,643.80 : x
  2. Step 2: Convert to fraction form
    19,126.98/28,688.85 = 6,643.80/x
  3. Step 3: Cross multiply
    19,126.98x = 28,688.85 × 6,643.80
  4. Step 4: Simplify right side
    19,126.98x = 190,602,981.63
  5. Step 5: Solve for x
    x = 190,602,981.63/19,126.98
  6. Step 6: Final answer
    x = 9,965.14

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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.