Home / 28,440.09-39,248.04-15,693.51

Finding the Fourth Proportional to 28,440.09, 39,248.04 and 15,693.51

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Solution

The fourth proportional to 28,440.09, 39,248.04 and 15,693.51 is: 21,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.09 : 39,248.04 = 15,693.51 : x
  2. Step 2: Convert to fraction form
    28,440.09/39,248.04 = 15,693.51/x
  3. Step 3: Cross multiply
    28,440.09x = 39,248.04 × 15,693.51
  4. Step 4: Simplify right side
    28,440.09x = 615,939,508.22
  5. Step 5: Solve for x
    x = 615,939,508.22/28,440.09
  6. Step 6: Final answer
    x = 21,657.44

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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.