Home / 15,913.08-21,970.17-10,885.68

Finding the Fourth Proportional to 15,913.08, 21,970.17 and 10,885.68

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Solution

The fourth proportional to 15,913.08, 21,970.17 and 10,885.68 is: 15,029.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.08 : 21,970.17 = 10,885.68 : x
  2. Step 2: Convert to fraction form
    15,913.08/21,970.17 = 10,885.68/x
  3. Step 3: Cross multiply
    15,913.08x = 21,970.17 × 10,885.68
  4. Step 4: Simplify right side
    15,913.08x = 239,160,240.17
  5. Step 5: Solve for x
    x = 239,160,240.17/15,913.08
  6. Step 6: Final answer
    x = 15,029.16

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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.