Home / 15,358.77-21,195.18-8,644.50

Finding the Fourth Proportional to 15,358.77, 21,195.18 and 8,644.50

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Solution

The fourth proportional to 15,358.77, 21,195.18 and 8,644.50 is: 11,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.77 : 21,195.18 = 8,644.50 : x
  2. Step 2: Convert to fraction form
    15,358.77/21,195.18 = 8,644.50/x
  3. Step 3: Cross multiply
    15,358.77x = 21,195.18 × 8,644.50
  4. Step 4: Simplify right side
    15,358.77x = 183,221,733.51
  5. Step 5: Solve for x
    x = 183,221,733.51/15,358.77
  6. Step 6: Final answer
    x = 11,929.45

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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.