Home / 9,776.88-13,488.56-6,421.50

Finding the Fourth Proportional to 9,776.88, 13,488.56 and 6,421.50

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Solution

The fourth proportional to 9,776.88, 13,488.56 and 6,421.50 is: 8,859.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,776.88 : 13,488.56 = 6,421.50 : x
  2. Step 2: Convert to fraction form
    9,776.88/13,488.56 = 6,421.50/x
  3. Step 3: Cross multiply
    9,776.88x = 13,488.56 × 6,421.50
  4. Step 4: Simplify right side
    9,776.88x = 86,616,780.01
  5. Step 5: Solve for x
    x = 86,616,780.01/9,776.88
  6. Step 6: Final answer
    x = 8,859.35

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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.