Home / 18,731.64-25,814.12-13,417.23

Finding the Fourth Proportional to 18,731.64, 25,814.12 and 13,417.23

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Solution

The fourth proportional to 18,731.64, 25,814.12 and 13,417.23 is: 18,490.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.64 : 25,814.12 = 13,417.23 : x
  2. Step 2: Convert to fraction form
    18,731.64/25,814.12 = 13,417.23/x
  3. Step 3: Cross multiply
    18,731.64x = 25,814.12 × 13,417.23
  4. Step 4: Simplify right side
    18,731.64x = 346,353,985.29
  5. Step 5: Solve for x
    x = 346,353,985.29/18,731.64
  6. Step 6: Final answer
    x = 18,490.32

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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.