Home / 28,484.12-42,729.59-11,855.39

Finding the Fourth Proportional to 28,484.12, 42,729.59 and 11,855.39

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Solution

The fourth proportional to 28,484.12, 42,729.59 and 11,855.39 is: 17,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.12 : 42,729.59 = 11,855.39 : x
  2. Step 2: Convert to fraction form
    28,484.12/42,729.59 = 11,855.39/x
  3. Step 3: Cross multiply
    28,484.12x = 42,729.59 × 11,855.39
  4. Step 4: Simplify right side
    28,484.12x = 506,575,953.99
  5. Step 5: Solve for x
    x = 506,575,953.99/28,484.12
  6. Step 6: Final answer
    x = 17,784.50

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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.