Home / 15,459.21-21,325.55-10,984.77

Finding the Fourth Proportional to 15,459.21, 21,325.55 and 10,984.77

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Solution

The fourth proportional to 15,459.21, 21,325.55 and 10,984.77 is: 15,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.21 : 21,325.55 = 10,984.77 : x
  2. Step 2: Convert to fraction form
    15,459.21/21,325.55 = 10,984.77/x
  3. Step 3: Cross multiply
    15,459.21x = 21,325.55 × 10,984.77
  4. Step 4: Simplify right side
    15,459.21x = 234,256,206.95
  5. Step 5: Solve for x
    x = 234,256,206.95/15,459.21
  6. Step 6: Final answer
    x = 15,153.18

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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.