Home / 15,407.70-21,262.91-9,038.87

Finding the Fourth Proportional to 15,407.70, 21,262.91 and 9,038.87

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Solution

The fourth proportional to 15,407.70, 21,262.91 and 9,038.87 is: 12,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.70 : 21,262.91 = 9,038.87 : x
  2. Step 2: Convert to fraction form
    15,407.70/21,262.91 = 9,038.87/x
  3. Step 3: Cross multiply
    15,407.70x = 21,262.91 × 9,038.87
  4. Step 4: Simplify right side
    15,407.70x = 192,192,595.59
  5. Step 5: Solve for x
    x = 192,192,595.59/15,407.70
  6. Step 6: Final answer
    x = 12,473.80

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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.