Home / 25,981.12-38,975.12-8,445

Finding the Fourth Proportional to 25,981.12, 38,975.12 and 8,445

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Solution

The fourth proportional to 25,981.12, 38,975.12 and 8,445 is: 12,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.12 : 38,975.12 = 8,445 : x
  2. Step 2: Convert to fraction form
    25,981.12/38,975.12 = 8,445/x
  3. Step 3: Cross multiply
    25,981.12x = 38,975.12 × 8,445
  4. Step 4: Simplify right side
    25,981.12x = 329,144,888.40
  5. Step 5: Solve for x
    x = 329,144,888.40/25,981.12
  6. Step 6: Final answer
    x = 12,668.62

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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.