Home / 12,947.45-19,421.19-5,547.11

Finding the Fourth Proportional to 12,947.45, 19,421.19 and 5,547.11

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Solution

The fourth proportional to 12,947.45, 19,421.19 and 5,547.11 is: 8,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.45 : 19,421.19 = 5,547.11 : x
  2. Step 2: Convert to fraction form
    12,947.45/19,421.19 = 5,547.11/x
  3. Step 3: Cross multiply
    12,947.45x = 19,421.19 × 5,547.11
  4. Step 4: Simplify right side
    12,947.45x = 107,731,525.81
  5. Step 5: Solve for x
    x = 107,731,525.81/12,947.45
  6. Step 6: Final answer
    x = 8,320.67

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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.