Home / 15,376.42-21,220.54-8,570.88

Finding the Fourth Proportional to 15,376.42, 21,220.54 and 8,570.88

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Solution

The fourth proportional to 15,376.42, 21,220.54 and 8,570.88 is: 11,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.42 : 21,220.54 = 8,570.88 : x
  2. Step 2: Convert to fraction form
    15,376.42/21,220.54 = 8,570.88/x
  3. Step 3: Cross multiply
    15,376.42x = 21,220.54 × 8,570.88
  4. Step 4: Simplify right side
    15,376.42x = 181,878,701.88
  5. Step 5: Solve for x
    x = 181,878,701.88/15,376.42
  6. Step 6: Final answer
    x = 11,828.42

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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.