Home / 9,780.30-14,670.45-7,666.20

Finding the Fourth Proportional to 9,780.30, 14,670.45 and 7,666.20

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Solution

The fourth proportional to 9,780.30, 14,670.45 and 7,666.20 is: 11,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.30 : 14,670.45 = 7,666.20 : x
  2. Step 2: Convert to fraction form
    9,780.30/14,670.45 = 7,666.20/x
  3. Step 3: Cross multiply
    9,780.30x = 14,670.45 × 7,666.20
  4. Step 4: Simplify right side
    9,780.30x = 112,466,603.79
  5. Step 5: Solve for x
    x = 112,466,603.79/9,780.30
  6. Step 6: Final answer
    x = 11,499.30

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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.