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Finding the Fourth Proportional to 25,904.30, 38,856.45 and 8,386.70

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Solution

The fourth proportional to 25,904.30, 38,856.45 and 8,386.70 is: 12,580.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,904.30 : 38,856.45 = 8,386.70 : x
  2. Step 2: Convert to fraction form
    25,904.30/38,856.45 = 8,386.70/x
  3. Step 3: Cross multiply
    25,904.30x = 38,856.45 × 8,386.70
  4. Step 4: Simplify right side
    25,904.30x = 325,877,389.22
  5. Step 5: Solve for x
    x = 325,877,389.22/25,904.30
  6. Step 6: Final answer
    x = 12,580.05

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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.