Home / 20,424.33-28,192.95-15,402.93

Finding the Fourth Proportional to 20,424.33, 28,192.95 and 15,402.93

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Solution

The fourth proportional to 20,424.33, 28,192.95 and 15,402.93 is: 21,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.33 : 28,192.95 = 15,402.93 : x
  2. Step 2: Convert to fraction form
    20,424.33/28,192.95 = 15,402.93/x
  3. Step 3: Cross multiply
    20,424.33x = 28,192.95 × 15,402.93
  4. Step 4: Simplify right side
    20,424.33x = 434,254,035.34
  5. Step 5: Solve for x
    x = 434,254,035.34/20,424.33
  6. Step 6: Final answer
    x = 21,261.60

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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.