Home / 28,440.81-42,666.28-9,722.93

Finding the Fourth Proportional to 28,440.81, 42,666.28 and 9,722.93

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Solution

The fourth proportional to 28,440.81, 42,666.28 and 9,722.93 is: 14,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.81 : 42,666.28 = 9,722.93 : x
  2. Step 2: Convert to fraction form
    28,440.81/42,666.28 = 9,722.93/x
  3. Step 3: Cross multiply
    28,440.81x = 42,666.28 × 9,722.93
  4. Step 4: Simplify right side
    28,440.81x = 414,841,016.16
  5. Step 5: Solve for x
    x = 414,841,016.16/28,440.81
  6. Step 6: Final answer
    x = 14,586.12

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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.