Home / 9,539.58-13,158.80-6,309.40

Finding the Fourth Proportional to 9,539.58, 13,158.80 and 6,309.40

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Solution

The fourth proportional to 9,539.58, 13,158.80 and 6,309.40 is: 8,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,539.58 : 13,158.80 = 6,309.40 : x
  2. Step 2: Convert to fraction form
    9,539.58/13,158.80 = 6,309.40/x
  3. Step 3: Cross multiply
    9,539.58x = 13,158.80 × 6,309.40
  4. Step 4: Simplify right side
    9,539.58x = 83,024,132.72
  5. Step 5: Solve for x
    x = 83,024,132.72/9,539.58
  6. Step 6: Final answer
    x = 8,703.12

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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.