Home / 15,371.55-21,212.74-8,657.23

Finding the Fourth Proportional to 15,371.55, 21,212.74 and 8,657.23

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Solution

The fourth proportional to 15,371.55, 21,212.74 and 8,657.23 is: 11,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.55 : 21,212.74 = 8,657.23 : x
  2. Step 2: Convert to fraction form
    15,371.55/21,212.74 = 8,657.23/x
  3. Step 3: Cross multiply
    15,371.55x = 21,212.74 × 8,657.23
  4. Step 4: Simplify right side
    15,371.55x = 183,643,569.11
  5. Step 5: Solve for x
    x = 183,643,569.11/15,371.55
  6. Step 6: Final answer
    x = 11,946.98

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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.