Home / 28,726.66-39,637.96-15,978.18

Finding the Fourth Proportional to 28,726.66, 39,637.96 and 15,978.18

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Solution

The fourth proportional to 28,726.66, 39,637.96 and 15,978.18 is: 22,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.66 : 39,637.96 = 15,978.18 : x
  2. Step 2: Convert to fraction form
    28,726.66/39,637.96 = 15,978.18/x
  3. Step 3: Cross multiply
    28,726.66x = 39,637.96 × 15,978.18
  4. Step 4: Simplify right side
    28,726.66x = 633,342,459.71
  5. Step 5: Solve for x
    x = 633,342,459.71/28,726.66
  6. Step 6: Final answer
    x = 22,047.20

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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.