Home / 28,252.24-38,988.36-15,678.16

Finding the Fourth Proportional to 28,252.24, 38,988.36 and 15,678.16

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Solution

The fourth proportional to 28,252.24, 38,988.36 and 15,678.16 is: 21,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.24 : 38,988.36 = 15,678.16 : x
  2. Step 2: Convert to fraction form
    28,252.24/38,988.36 = 15,678.16/x
  3. Step 3: Cross multiply
    28,252.24x = 38,988.36 × 15,678.16
  4. Step 4: Simplify right side
    28,252.24x = 611,265,746.22
  5. Step 5: Solve for x
    x = 611,265,746.22/28,252.24
  6. Step 6: Final answer
    x = 21,636.01

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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.