Home / 14,710.17-20,299.54-8,421.33

Finding the Fourth Proportional to 14,710.17, 20,299.54 and 8,421.33

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Solution

The fourth proportional to 14,710.17, 20,299.54 and 8,421.33 is: 11,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,710.17 : 20,299.54 = 8,421.33 : x
  2. Step 2: Convert to fraction form
    14,710.17/20,299.54 = 8,421.33/x
  3. Step 3: Cross multiply
    14,710.17x = 20,299.54 × 8,421.33
  4. Step 4: Simplify right side
    14,710.17x = 170,949,125.19
  5. Step 5: Solve for x
    x = 170,949,125.19/14,710.17
  6. Step 6: Final answer
    x = 11,621.15

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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.