Home / 19,510.24-26,903.22-15,729.40

Finding the Fourth Proportional to 19,510.24, 26,903.22 and 15,729.40

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Solution

The fourth proportional to 19,510.24, 26,903.22 and 15,729.40 is: 21,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,510.24 : 26,903.22 = 15,729.40 : x
  2. Step 2: Convert to fraction form
    19,510.24/26,903.22 = 15,729.40/x
  3. Step 3: Cross multiply
    19,510.24x = 26,903.22 × 15,729.40
  4. Step 4: Simplify right side
    19,510.24x = 423,171,508.67
  5. Step 5: Solve for x
    x = 423,171,508.67/19,510.24
  6. Step 6: Final answer
    x = 21,689.71

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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.