Home / 31,421-43,358.40-18,498.23

Finding the Fourth Proportional to 31,421, 43,358.40 and 18,498.23

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Solution

The fourth proportional to 31,421, 43,358.40 and 18,498.23 is: 25,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421 : 43,358.40 = 18,498.23 : x
  2. Step 2: Convert to fraction form
    31,421/43,358.40 = 18,498.23/x
  3. Step 3: Cross multiply
    31,421x = 43,358.40 × 18,498.23
  4. Step 4: Simplify right side
    31,421x = 802,053,655.63
  5. Step 5: Solve for x
    x = 802,053,655.63/31,421
  6. Step 6: Final answer
    x = 25,526.04

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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.