Home / 15,880.74-21,889.86-10,774.58

Finding the Fourth Proportional to 15,880.74, 21,889.86 and 10,774.58

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Solution

The fourth proportional to 15,880.74, 21,889.86 and 10,774.58 is: 14,851.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.74 : 21,889.86 = 10,774.58 : x
  2. Step 2: Convert to fraction form
    15,880.74/21,889.86 = 10,774.58/x
  3. Step 3: Cross multiply
    15,880.74x = 21,889.86 × 10,774.58
  4. Step 4: Simplify right side
    15,880.74x = 235,854,047.76
  5. Step 5: Solve for x
    x = 235,854,047.76/15,880.74
  6. Step 6: Final answer
    x = 14,851.58

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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.