Home / 15,307.45-21,134.25-9,342.58

Finding the Fourth Proportional to 15,307.45, 21,134.25 and 9,342.58

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Solution

The fourth proportional to 15,307.45, 21,134.25 and 9,342.58 is: 12,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.45 : 21,134.25 = 9,342.58 : x
  2. Step 2: Convert to fraction form
    15,307.45/21,134.25 = 9,342.58/x
  3. Step 3: Cross multiply
    15,307.45x = 21,134.25 × 9,342.58
  4. Step 4: Simplify right side
    15,307.45x = 197,448,381.88
  5. Step 5: Solve for x
    x = 197,448,381.88/15,307.45
  6. Step 6: Final answer
    x = 12,898.84

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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.