Home / 25,970.80-38,931.52-8,428.36

Finding the Fourth Proportional to 25,970.80, 38,931.52 and 8,428.36

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Solution

The fourth proportional to 25,970.80, 38,931.52 and 8,428.36 is: 12,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,970.80 : 38,931.52 = 8,428.36 : x
  2. Step 2: Convert to fraction form
    25,970.80/38,931.52 = 8,428.36/x
  3. Step 3: Cross multiply
    25,970.80x = 38,931.52 × 8,428.36
  4. Step 4: Simplify right side
    25,970.80x = 328,128,865.91
  5. Step 5: Solve for x
    x = 328,128,865.91/25,970.80
  6. Step 6: Final answer
    x = 12,634.53

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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.