Home / 13,430.10-18,533.51-8,124.91

Finding the Fourth Proportional to 13,430.10, 18,533.51 and 8,124.91

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Solution

The fourth proportional to 13,430.10, 18,533.51 and 8,124.91 is: 11,212.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.10 : 18,533.51 = 8,124.91 : x
  2. Step 2: Convert to fraction form
    13,430.10/18,533.51 = 8,124.91/x
  3. Step 3: Cross multiply
    13,430.10x = 18,533.51 × 8,124.91
  4. Step 4: Simplify right side
    13,430.10x = 150,583,044.24
  5. Step 5: Solve for x
    x = 150,583,044.24/13,430.10
  6. Step 6: Final answer
    x = 11,212.35

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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.