Home / 21,024.92-28,980.56-15,350.68

Finding the Fourth Proportional to 21,024.92, 28,980.56 and 15,350.68

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Solution

The fourth proportional to 21,024.92, 28,980.56 and 15,350.68 is: 21,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.92 : 28,980.56 = 15,350.68 : x
  2. Step 2: Convert to fraction form
    21,024.92/28,980.56 = 15,350.68/x
  3. Step 3: Cross multiply
    21,024.92x = 28,980.56 × 15,350.68
  4. Step 4: Simplify right side
    21,024.92x = 444,871,302.78
  5. Step 5: Solve for x
    x = 444,871,302.78/21,024.92
  6. Step 6: Final answer
    x = 21,159.24

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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.