Home / 15,709.86-21,677.52-9,739.35

Finding the Fourth Proportional to 15,709.86, 21,677.52 and 9,739.35

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Solution

The fourth proportional to 15,709.86, 21,677.52 and 9,739.35 is: 13,439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.86 : 21,677.52 = 9,739.35 : x
  2. Step 2: Convert to fraction form
    15,709.86/21,677.52 = 9,739.35/x
  3. Step 3: Cross multiply
    15,709.86x = 21,677.52 × 9,739.35
  4. Step 4: Simplify right side
    15,709.86x = 211,124,954.41
  5. Step 5: Solve for x
    x = 211,124,954.41/15,709.86
  6. Step 6: Final answer
    x = 13,439.01

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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.