Home / 11,421.66-15,756.90-6,703.80

Finding the Fourth Proportional to 11,421.66, 15,756.90 and 6,703.80

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Solution

The fourth proportional to 11,421.66, 15,756.90 and 6,703.80 is: 9,248.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.66 : 15,756.90 = 6,703.80 : x
  2. Step 2: Convert to fraction form
    11,421.66/15,756.90 = 6,703.80/x
  3. Step 3: Cross multiply
    11,421.66x = 15,756.90 × 6,703.80
  4. Step 4: Simplify right side
    11,421.66x = 105,631,106.22
  5. Step 5: Solve for x
    x = 105,631,106.22/11,421.66
  6. Step 6: Final answer
    x = 9,248.31

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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.