Home / 15,312.24-21,125.86-9,341.76

Finding the Fourth Proportional to 15,312.24, 21,125.86 and 9,341.76

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Solution

The fourth proportional to 15,312.24, 21,125.86 and 9,341.76 is: 12,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.24 : 21,125.86 = 9,341.76 : x
  2. Step 2: Convert to fraction form
    15,312.24/21,125.86 = 9,341.76/x
  3. Step 3: Cross multiply
    15,312.24x = 21,125.86 × 9,341.76
  4. Step 4: Simplify right side
    15,312.24x = 197,352,713.91
  5. Step 5: Solve for x
    x = 197,352,713.91/15,312.24
  6. Step 6: Final answer
    x = 12,888.56

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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.