Home / 20,848.50-28,770.93-11,417.40

Finding the Fourth Proportional to 20,848.50, 28,770.93 and 11,417.40

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Solution

The fourth proportional to 20,848.50, 28,770.93 and 11,417.40 is: 15,756.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.50 : 28,770.93 = 11,417.40 : x
  2. Step 2: Convert to fraction form
    20,848.50/28,770.93 = 11,417.40/x
  3. Step 3: Cross multiply
    20,848.50x = 28,770.93 × 11,417.40
  4. Step 4: Simplify right side
    20,848.50x = 328,489,216.18
  5. Step 5: Solve for x
    x = 328,489,216.18/20,848.50
  6. Step 6: Final answer
    x = 15,756.01

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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.