Home / 15,360.02-21,196.87-8,645.75

Finding the Fourth Proportional to 15,360.02, 21,196.87 and 8,645.75

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Solution

The fourth proportional to 15,360.02, 21,196.87 and 8,645.75 is: 11,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.02 : 21,196.87 = 8,645.75 : x
  2. Step 2: Convert to fraction form
    15,360.02/21,196.87 = 8,645.75/x
  3. Step 3: Cross multiply
    15,360.02x = 21,196.87 × 8,645.75
  4. Step 4: Simplify right side
    15,360.02x = 183,262,838.80
  5. Step 5: Solve for x
    x = 183,262,838.80/15,360.02
  6. Step 6: Final answer
    x = 11,931.16

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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.