Home / 21,438.02-32,176.81-10,915.63

Finding the Fourth Proportional to 21,438.02, 32,176.81 and 10,915.63

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Solution

The fourth proportional to 21,438.02, 32,176.81 and 10,915.63 is: 16,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.02 : 32,176.81 = 10,915.63 : x
  2. Step 2: Convert to fraction form
    21,438.02/32,176.81 = 10,915.63/x
  3. Step 3: Cross multiply
    21,438.02x = 32,176.81 × 10,915.63
  4. Step 4: Simplify right side
    21,438.02x = 351,230,085.74
  5. Step 5: Solve for x
    x = 351,230,085.74/21,438.02
  6. Step 6: Final answer
    x = 16,383.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.