Home / 14,721.56-20,315.64-8,433.92

Finding the Fourth Proportional to 14,721.56, 20,315.64 and 8,433.92

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Solution

The fourth proportional to 14,721.56, 20,315.64 and 8,433.92 is: 11,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.56 : 20,315.64 = 8,433.92 : x
  2. Step 2: Convert to fraction form
    14,721.56/20,315.64 = 8,433.92/x
  3. Step 3: Cross multiply
    14,721.56x = 20,315.64 × 8,433.92
  4. Step 4: Simplify right side
    14,721.56x = 171,340,482.51
  5. Step 5: Solve for x
    x = 171,340,482.51/14,721.56
  6. Step 6: Final answer
    x = 11,638.74

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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.