Home / 30,416.48-45,616.80-12,877.28

Finding the Fourth Proportional to 30,416.48, 45,616.80 and 12,877.28

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Solution

The fourth proportional to 30,416.48, 45,616.80 and 12,877.28 is: 19,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,416.48 : 45,616.80 = 12,877.28 : x
  2. Step 2: Convert to fraction form
    30,416.48/45,616.80 = 12,877.28/x
  3. Step 3: Cross multiply
    30,416.48x = 45,616.80 × 12,877.28
  4. Step 4: Simplify right side
    30,416.48x = 587,420,306.30
  5. Step 5: Solve for x
    x = 587,420,306.30/30,416.48
  6. Step 6: Final answer
    x = 19,312.57

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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.