Home / 30,926.64-42,678.58-16,779.18

Finding the Fourth Proportional to 30,926.64, 42,678.58 and 16,779.18

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Solution

The fourth proportional to 30,926.64, 42,678.58 and 16,779.18 is: 23,155.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.64 : 42,678.58 = 16,779.18 : x
  2. Step 2: Convert to fraction form
    30,926.64/42,678.58 = 16,779.18/x
  3. Step 3: Cross multiply
    30,926.64x = 42,678.58 × 16,779.18
  4. Step 4: Simplify right side
    30,926.64x = 716,111,575.96
  5. Step 5: Solve for x
    x = 716,111,575.96/30,926.64
  6. Step 6: Final answer
    x = 23,155.17

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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.