Home / 20,507-28,293.18-12,545.24

Finding the Fourth Proportional to 20,507, 28,293.18 and 12,545.24

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Solution

The fourth proportional to 20,507, 28,293.18 and 12,545.24 is: 17,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507 : 28,293.18 = 12,545.24 : x
  2. Step 2: Convert to fraction form
    20,507/28,293.18 = 12,545.24/x
  3. Step 3: Cross multiply
    20,507x = 28,293.18 × 12,545.24
  4. Step 4: Simplify right side
    20,507x = 354,944,733.46
  5. Step 5: Solve for x
    x = 354,944,733.46/20,507
  6. Step 6: Final answer
    x = 17,308.47

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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.