Home / 14,705.15-20,289.89-10,728.45

Finding the Fourth Proportional to 14,705.15, 20,289.89 and 10,728.45

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Solution

The fourth proportional to 14,705.15, 20,289.89 and 10,728.45 is: 14,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,705.15 : 20,289.89 = 10,728.45 : x
  2. Step 2: Convert to fraction form
    14,705.15/20,289.89 = 10,728.45/x
  3. Step 3: Cross multiply
    14,705.15x = 20,289.89 × 10,728.45
  4. Step 4: Simplify right side
    14,705.15x = 217,679,097.19
  5. Step 5: Solve for x
    x = 217,679,097.19/14,705.15
  6. Step 6: Final answer
    x = 14,802.92

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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.