Home / 21,312.15-31,964.37-5,726.13

Finding the Fourth Proportional to 21,312.15, 31,964.37 and 5,726.13

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Solution

The fourth proportional to 21,312.15, 31,964.37 and 5,726.13 is: 8,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.15 : 31,964.37 = 5,726.13 : x
  2. Step 2: Convert to fraction form
    21,312.15/31,964.37 = 5,726.13/x
  3. Step 3: Cross multiply
    21,312.15x = 31,964.37 × 5,726.13
  4. Step 4: Simplify right side
    21,312.15x = 183,032,137.99
  5. Step 5: Solve for x
    x = 183,032,137.99/21,312.15
  6. Step 6: Final answer
    x = 8,588.16

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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.