Home / 15,931.35-21,940.74-15,587.10

Finding the Fourth Proportional to 15,931.35, 21,940.74 and 15,587.10

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Solution

The fourth proportional to 15,931.35, 21,940.74 and 15,587.10 is: 21,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.35 : 21,940.74 = 15,587.10 : x
  2. Step 2: Convert to fraction form
    15,931.35/21,940.74 = 15,587.10/x
  3. Step 3: Cross multiply
    15,931.35x = 21,940.74 × 15,587.10
  4. Step 4: Simplify right side
    15,931.35x = 341,992,508.45
  5. Step 5: Solve for x
    x = 341,992,508.45/15,931.35
  6. Step 6: Final answer
    x = 21,466.64

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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.