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Finding the Fourth Proportional to 12,681.99, 19,019.31 and 4,888.98

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Solution

The fourth proportional to 12,681.99, 19,019.31 and 4,888.98 is: 7,332.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.99 : 19,019.31 = 4,888.98 : x
  2. Step 2: Convert to fraction form
    12,681.99/19,019.31 = 4,888.98/x
  3. Step 3: Cross multiply
    12,681.99x = 19,019.31 × 4,888.98
  4. Step 4: Simplify right side
    12,681.99x = 92,985,026.20
  5. Step 5: Solve for x
    x = 92,985,026.20/12,681.99
  6. Step 6: Final answer
    x = 7,332.05

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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.