Home / 13,947.84-20,913.12-6,547.68

Finding the Fourth Proportional to 13,947.84, 20,913.12 and 6,547.68

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Solution

The fourth proportional to 13,947.84, 20,913.12 and 6,547.68 is: 9,817.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.84 : 20,913.12 = 6,547.68 : x
  2. Step 2: Convert to fraction form
    13,947.84/20,913.12 = 6,547.68/x
  3. Step 3: Cross multiply
    13,947.84x = 20,913.12 × 6,547.68
  4. Step 4: Simplify right side
    13,947.84x = 136,932,417.56
  5. Step 5: Solve for x
    x = 136,932,417.56/13,947.84
  6. Step 6: Final answer
    x = 9,817.46

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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.