Home / 11,315.70-15,569.76-9,291.66

Finding the Fourth Proportional to 11,315.70, 15,569.76 and 9,291.66

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Solution

The fourth proportional to 11,315.70, 15,569.76 and 9,291.66 is: 12,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.70 : 15,569.76 = 9,291.66 : x
  2. Step 2: Convert to fraction form
    11,315.70/15,569.76 = 9,291.66/x
  3. Step 3: Cross multiply
    11,315.70x = 15,569.76 × 9,291.66
  4. Step 4: Simplify right side
    11,315.70x = 144,668,916.20
  5. Step 5: Solve for x
    x = 144,668,916.20/11,315.70
  6. Step 6: Final answer
    x = 12,784.80

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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.