Home / 28,085.77-38,758.34-15,510.49

Finding the Fourth Proportional to 28,085.77, 38,758.34 and 15,510.49

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Solution

The fourth proportional to 28,085.77, 38,758.34 and 15,510.49 is: 21,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.77 : 38,758.34 = 15,510.49 : x
  2. Step 2: Convert to fraction form
    28,085.77/38,758.34 = 15,510.49/x
  3. Step 3: Cross multiply
    28,085.77x = 38,758.34 × 15,510.49
  4. Step 4: Simplify right side
    28,085.77x = 601,160,767.43
  5. Step 5: Solve for x
    x = 601,160,767.43/28,085.77
  6. Step 6: Final answer
    x = 21,404.46

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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.