Home / 20,928.56-31,366.12-9,810.74

Finding the Fourth Proportional to 20,928.56, 31,366.12 and 9,810.74

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Solution

The fourth proportional to 20,928.56, 31,366.12 and 9,810.74 is: 14,703.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.56 : 31,366.12 = 9,810.74 : x
  2. Step 2: Convert to fraction form
    20,928.56/31,366.12 = 9,810.74/x
  3. Step 3: Cross multiply
    20,928.56x = 31,366.12 × 9,810.74
  4. Step 4: Simplify right side
    20,928.56x = 307,724,848.13
  5. Step 5: Solve for x
    x = 307,724,848.13/20,928.56
  6. Step 6: Final answer
    x = 14,703.58

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1.5x scale

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.