Home / 10,779.20-14,875.62-6,306.20

Finding the Fourth Proportional to 10,779.20, 14,875.62 and 6,306.20

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Solution

The fourth proportional to 10,779.20, 14,875.62 and 6,306.20 is: 8,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.20 : 14,875.62 = 6,306.20 : x
  2. Step 2: Convert to fraction form
    10,779.20/14,875.62 = 6,306.20/x
  3. Step 3: Cross multiply
    10,779.20x = 14,875.62 × 6,306.20
  4. Step 4: Simplify right side
    10,779.20x = 93,808,634.84
  5. Step 5: Solve for x
    x = 93,808,634.84/10,779.20
  6. Step 6: Final answer
    x = 8,702.75

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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.