Home / 15,278.50-21,085.16-8,566.28

Finding the Fourth Proportional to 15,278.50, 21,085.16 and 8,566.28

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Solution

The fourth proportional to 15,278.50, 21,085.16 and 8,566.28 is: 11,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.50 : 21,085.16 = 8,566.28 : x
  2. Step 2: Convert to fraction form
    15,278.50/21,085.16 = 8,566.28/x
  3. Step 3: Cross multiply
    15,278.50x = 21,085.16 × 8,566.28
  4. Step 4: Simplify right side
    15,278.50x = 180,621,384.40
  5. Step 5: Solve for x
    x = 180,621,384.40/15,278.50
  6. Step 6: Final answer
    x = 11,821.93

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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.