Home / 15,312.24-21,133.20-9,347.36

Finding the Fourth Proportional to 15,312.24, 21,133.20 and 9,347.36

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Solution

The fourth proportional to 15,312.24, 21,133.20 and 9,347.36 is: 12,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.24 : 21,133.20 = 9,347.36 : x
  2. Step 2: Convert to fraction form
    15,312.24/21,133.20 = 9,347.36/x
  3. Step 3: Cross multiply
    15,312.24x = 21,133.20 × 9,347.36
  4. Step 4: Simplify right side
    15,312.24x = 197,539,628.35
  5. Step 5: Solve for x
    x = 197,539,628.35/15,312.24
  6. Step 6: Final answer
    x = 12,900.77

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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.