Home / 15,815.04-23,724.96-5,429.76

Finding the Fourth Proportional to 15,815.04, 23,724.96 and 5,429.76

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Solution

The fourth proportional to 15,815.04, 23,724.96 and 5,429.76 is: 8,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.04 : 23,724.96 = 5,429.76 : x
  2. Step 2: Convert to fraction form
    15,815.04/23,724.96 = 5,429.76/x
  3. Step 3: Cross multiply
    15,815.04x = 23,724.96 × 5,429.76
  4. Step 4: Simplify right side
    15,815.04x = 128,820,838.81
  5. Step 5: Solve for x
    x = 128,820,838.81/15,815.04
  6. Step 6: Final answer
    x = 8,145.46

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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.