Home / 10,517.28-15,779.58-4,678.08

Finding the Fourth Proportional to 10,517.28, 15,779.58 and 4,678.08

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Solution

The fourth proportional to 10,517.28, 15,779.58 and 4,678.08 is: 7,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.28 : 15,779.58 = 4,678.08 : x
  2. Step 2: Convert to fraction form
    10,517.28/15,779.58 = 4,678.08/x
  3. Step 3: Cross multiply
    10,517.28x = 15,779.58 × 4,678.08
  4. Step 4: Simplify right side
    10,517.28x = 73,818,137.61
  5. Step 5: Solve for x
    x = 73,818,137.61/10,517.28
  6. Step 6: Final answer
    x = 7,018.75

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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.