Home / 15,871.48-21,890.65-9,497.59

Finding the Fourth Proportional to 15,871.48, 21,890.65 and 9,497.59

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Solution

The fourth proportional to 15,871.48, 21,890.65 and 9,497.59 is: 13,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.48 : 21,890.65 = 9,497.59 : x
  2. Step 2: Convert to fraction form
    15,871.48/21,890.65 = 9,497.59/x
  3. Step 3: Cross multiply
    15,871.48x = 21,890.65 × 9,497.59
  4. Step 4: Simplify right side
    15,871.48x = 207,908,418.53
  5. Step 5: Solve for x
    x = 207,908,418.53/15,871.48
  6. Step 6: Final answer
    x = 13,099.50

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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.