Home / 28,024.64-38,656.40-16,686.08

Finding the Fourth Proportional to 28,024.64, 38,656.40 and 16,686.08

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Solution

The fourth proportional to 28,024.64, 38,656.40 and 16,686.08 is: 23,016.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,024.64 : 38,656.40 = 16,686.08 : x
  2. Step 2: Convert to fraction form
    28,024.64/38,656.40 = 16,686.08/x
  3. Step 3: Cross multiply
    28,024.64x = 38,656.40 × 16,686.08
  4. Step 4: Simplify right side
    28,024.64x = 645,023,782.91
  5. Step 5: Solve for x
    x = 645,023,782.91/28,024.64
  6. Step 6: Final answer
    x = 23,016.31

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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.