Home / 14,385.09-19,851.19-8,011.51

Finding the Fourth Proportional to 14,385.09, 19,851.19 and 8,011.51

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Solution

The fourth proportional to 14,385.09, 19,851.19 and 8,011.51 is: 11,055.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.09 : 19,851.19 = 8,011.51 : x
  2. Step 2: Convert to fraction form
    14,385.09/19,851.19 = 8,011.51/x
  3. Step 3: Cross multiply
    14,385.09x = 19,851.19 × 8,011.51
  4. Step 4: Simplify right side
    14,385.09x = 159,038,007.20
  5. Step 5: Solve for x
    x = 159,038,007.20/14,385.09
  6. Step 6: Final answer
    x = 11,055.75

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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.