Home / 28,459.98-39,271.15-15,885.26

Finding the Fourth Proportional to 28,459.98, 39,271.15 and 15,885.26

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Solution

The fourth proportional to 28,459.98, 39,271.15 and 15,885.26 is: 21,919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.98 : 39,271.15 = 15,885.26 : x
  2. Step 2: Convert to fraction form
    28,459.98/39,271.15 = 15,885.26/x
  3. Step 3: Cross multiply
    28,459.98x = 39,271.15 × 15,885.26
  4. Step 4: Simplify right side
    28,459.98x = 623,832,428.25
  5. Step 5: Solve for x
    x = 623,832,428.25/28,459.98
  6. Step 6: Final answer
    x = 21,919.64

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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.