Home / 20,916.63-28,864.89-12,533.13

Finding the Fourth Proportional to 20,916.63, 28,864.89 and 12,533.13

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Solution

The fourth proportional to 20,916.63, 28,864.89 and 12,533.13 is: 17,295.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.63 : 28,864.89 = 12,533.13 : x
  2. Step 2: Convert to fraction form
    20,916.63/28,864.89 = 12,533.13/x
  3. Step 3: Cross multiply
    20,916.63x = 28,864.89 × 12,533.13
  4. Step 4: Simplify right side
    20,916.63x = 361,767,418.81
  5. Step 5: Solve for x
    x = 361,767,418.81/20,916.63
  6. Step 6: Final answer
    x = 17,295.68

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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.