Home / 30,926.71-42,678.67-16,779.25

Finding the Fourth Proportional to 30,926.71, 42,678.67 and 16,779.25

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Solution

The fourth proportional to 30,926.71, 42,678.67 and 16,779.25 is: 23,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.71 : 42,678.67 = 16,779.25 : x
  2. Step 2: Convert to fraction form
    30,926.71/42,678.67 = 16,779.25/x
  3. Step 3: Cross multiply
    30,926.71x = 42,678.67 × 16,779.25
  4. Step 4: Simplify right side
    30,926.71x = 716,116,073.60
  5. Step 5: Solve for x
    x = 716,116,073.60/30,926.71
  6. Step 6: Final answer
    x = 23,155.26

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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.