Home / 15,580.12-21,500.26-8,506.58

Finding the Fourth Proportional to 15,580.12, 21,500.26 and 8,506.58

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Solution

The fourth proportional to 15,580.12, 21,500.26 and 8,506.58 is: 11,738.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.12 : 21,500.26 = 8,506.58 : x
  2. Step 2: Convert to fraction form
    15,580.12/21,500.26 = 8,506.58/x
  3. Step 3: Cross multiply
    15,580.12x = 21,500.26 × 8,506.58
  4. Step 4: Simplify right side
    15,580.12x = 182,893,681.71
  5. Step 5: Solve for x
    x = 182,893,681.71/15,580.12
  6. Step 6: Final answer
    x = 11,738.91

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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.