Home / 14,972.81-20,670.58-9,005.81

Finding the Fourth Proportional to 14,972.81, 20,670.58 and 9,005.81

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Solution

The fourth proportional to 14,972.81, 20,670.58 and 9,005.81 is: 12,432.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,972.81 : 20,670.58 = 9,005.81 : x
  2. Step 2: Convert to fraction form
    14,972.81/20,670.58 = 9,005.81/x
  3. Step 3: Cross multiply
    14,972.81x = 20,670.58 × 9,005.81
  4. Step 4: Simplify right side
    14,972.81x = 186,155,379.00
  5. Step 5: Solve for x
    x = 186,155,379.00/14,972.81
  6. Step 6: Final answer
    x = 12,432.89

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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.