Home / 25,875.12-38,815.12-7,154.40

Finding the Fourth Proportional to 25,875.12, 38,815.12 and 7,154.40

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Solution

The fourth proportional to 25,875.12, 38,815.12 and 7,154.40 is: 10,732.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,875.12 : 38,815.12 = 7,154.40 : x
  2. Step 2: Convert to fraction form
    25,875.12/38,815.12 = 7,154.40/x
  3. Step 3: Cross multiply
    25,875.12x = 38,815.12 × 7,154.40
  4. Step 4: Simplify right side
    25,875.12x = 277,698,894.53
  5. Step 5: Solve for x
    x = 277,698,894.53/25,875.12
  6. Step 6: Final answer
    x = 10,732.27

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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.