Home / 29,655.12-40,853.76-20,686.32

Finding the Fourth Proportional to 29,655.12, 40,853.76 and 20,686.32

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Solution

The fourth proportional to 29,655.12, 40,853.76 and 20,686.32 is: 28,498.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,655.12 : 40,853.76 = 20,686.32 : x
  2. Step 2: Convert to fraction form
    29,655.12/40,853.76 = 20,686.32/x
  3. Step 3: Cross multiply
    29,655.12x = 40,853.76 × 20,686.32
  4. Step 4: Simplify right side
    29,655.12x = 845,113,952.56
  5. Step 5: Solve for x
    x = 845,113,952.56/29,655.12
  6. Step 6: Final answer
    x = 28,498.08

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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.