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Finding the Fourth Proportional to 39,574.88, 59,363.08 and 12,920.82

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Solution

The fourth proportional to 39,574.88, 59,363.08 and 12,920.82 is: 19,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,574.88 : 59,363.08 = 12,920.82 : x
  2. Step 2: Convert to fraction form
    39,574.88/59,363.08 = 12,920.82/x
  3. Step 3: Cross multiply
    39,574.88x = 59,363.08 × 12,920.82
  4. Step 4: Simplify right side
    39,574.88x = 767,019,416.41
  5. Step 5: Solve for x
    x = 767,019,416.41/39,574.88
  6. Step 6: Final answer
    x = 19,381.47

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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.