Home / 25,475.35-35,156.10-15,920.79

Finding the Fourth Proportional to 25,475.35, 35,156.10 and 15,920.79

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Solution

The fourth proportional to 25,475.35, 35,156.10 and 15,920.79 is: 21,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,475.35 : 35,156.10 = 15,920.79 : x
  2. Step 2: Convert to fraction form
    25,475.35/35,156.10 = 15,920.79/x
  3. Step 3: Cross multiply
    25,475.35x = 35,156.10 × 15,920.79
  4. Step 4: Simplify right side
    25,475.35x = 559,712,885.32
  5. Step 5: Solve for x
    x = 559,712,885.32/25,475.35
  6. Step 6: Final answer
    x = 21,970.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.