Home / 12,905.10-19,332.09-8,509.23

Finding the Fourth Proportional to 12,905.10, 19,332.09 and 8,509.23

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Solution

The fourth proportional to 12,905.10, 19,332.09 and 8,509.23 is: 12,746.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.10 : 19,332.09 = 8,509.23 : x
  2. Step 2: Convert to fraction form
    12,905.10/19,332.09 = 8,509.23/x
  3. Step 3: Cross multiply
    12,905.10x = 19,332.09 × 8,509.23
  4. Step 4: Simplify right side
    12,905.10x = 164,501,200.19
  5. Step 5: Solve for x
    x = 164,501,200.19/12,905.10
  6. Step 6: Final answer
    x = 12,746.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.