Home / 13,721.02-20,565.01-6,315.34

Finding the Fourth Proportional to 13,721.02, 20,565.01 and 6,315.34

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Solution

The fourth proportional to 13,721.02, 20,565.01 and 6,315.34 is: 9,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.02 : 20,565.01 = 6,315.34 : x
  2. Step 2: Convert to fraction form
    13,721.02/20,565.01 = 6,315.34/x
  3. Step 3: Cross multiply
    13,721.02x = 20,565.01 × 6,315.34
  4. Step 4: Simplify right side
    13,721.02x = 129,875,030.25
  5. Step 5: Solve for x
    x = 129,875,030.25/13,721.02
  6. Step 6: Final answer
    x = 9,465.41

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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.