Home / 36,686.48-55,029.72-13,312.88

Finding the Fourth Proportional to 36,686.48, 55,029.72 and 13,312.88

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Solution

The fourth proportional to 36,686.48, 55,029.72 and 13,312.88 is: 19,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,686.48 : 55,029.72 = 13,312.88 : x
  2. Step 2: Convert to fraction form
    36,686.48/55,029.72 = 13,312.88/x
  3. Step 3: Cross multiply
    36,686.48x = 55,029.72 × 13,312.88
  4. Step 4: Simplify right side
    36,686.48x = 732,604,058.79
  5. Step 5: Solve for x
    x = 732,604,058.79/36,686.48
  6. Step 6: Final answer
    x = 19,969.32

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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.