Home / 28,507.03-39,335.29-15,929.35

Finding the Fourth Proportional to 28,507.03, 39,335.29 and 15,929.35

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Solution

The fourth proportional to 28,507.03, 39,335.29 and 15,929.35 is: 21,980.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.03 : 39,335.29 = 15,929.35 : x
  2. Step 2: Convert to fraction form
    28,507.03/39,335.29 = 15,929.35/x
  3. Step 3: Cross multiply
    28,507.03x = 39,335.29 × 15,929.35
  4. Step 4: Simplify right side
    28,507.03x = 626,585,601.76
  5. Step 5: Solve for x
    x = 626,585,601.76/28,507.03
  6. Step 6: Final answer
    x = 21,980.04

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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.