Home / 28,085.84-38,758.36-15,510.48

Finding the Fourth Proportional to 28,085.84, 38,758.36 and 15,510.48

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Solution

The fourth proportional to 28,085.84, 38,758.36 and 15,510.48 is: 21,404.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.84 : 38,758.36 = 15,510.48 : x
  2. Step 2: Convert to fraction form
    28,085.84/38,758.36 = 15,510.48/x
  3. Step 3: Cross multiply
    28,085.84x = 38,758.36 × 15,510.48
  4. Step 4: Simplify right side
    28,085.84x = 601,160,767.61
  5. Step 5: Solve for x
    x = 601,160,767.61/28,085.84
  6. Step 6: Final answer
    x = 21,404.41

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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.