Home / 28,085.44-38,758-15,510.16

Finding the Fourth Proportional to 28,085.44, 38,758 and 15,510.16

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Solution

The fourth proportional to 28,085.44, 38,758 and 15,510.16 is: 21,404.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.44 : 38,758 = 15,510.16 : x
  2. Step 2: Convert to fraction form
    28,085.44/38,758 = 15,510.16/x
  3. Step 3: Cross multiply
    28,085.44x = 38,758 × 15,510.16
  4. Step 4: Simplify right side
    28,085.44x = 601,142,781.28
  5. Step 5: Solve for x
    x = 601,142,781.28/28,085.44
  6. Step 6: Final answer
    x = 21,404.07

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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.