Home / 28,359.40-42,541.05-9,631.79

Finding the Fourth Proportional to 28,359.40, 42,541.05 and 9,631.79

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Solution

The fourth proportional to 28,359.40, 42,541.05 and 9,631.79 is: 14,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.40 : 42,541.05 = 9,631.79 : x
  2. Step 2: Convert to fraction form
    28,359.40/42,541.05 = 9,631.79/x
  3. Step 3: Cross multiply
    28,359.40x = 42,541.05 × 9,631.79
  4. Step 4: Simplify right side
    28,359.40x = 409,746,459.98
  5. Step 5: Solve for x
    x = 409,746,459.98/28,359.40
  6. Step 6: Final answer
    x = 14,448.35

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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.