Home / 30,927.05-42,679.33-16,779.89

Finding the Fourth Proportional to 30,927.05, 42,679.33 and 16,779.89

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Solution

The fourth proportional to 30,927.05, 42,679.33 and 16,779.89 is: 23,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,927.05 : 42,679.33 = 16,779.89 : x
  2. Step 2: Convert to fraction form
    30,927.05/42,679.33 = 16,779.89/x
  3. Step 3: Cross multiply
    30,927.05x = 42,679.33 × 16,779.89
  4. Step 4: Simplify right side
    30,927.05x = 716,154,378.77
  5. Step 5: Solve for x
    x = 716,154,378.77/30,927.05
  6. Step 6: Final answer
    x = 23,156.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.