Home / 15,357.87-21,193.65-8,988.84

Finding the Fourth Proportional to 15,357.87, 21,193.65 and 8,988.84

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Solution

The fourth proportional to 15,357.87, 21,193.65 and 8,988.84 is: 12,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,357.87 : 21,193.65 = 8,988.84 : x
  2. Step 2: Convert to fraction form
    15,357.87/21,193.65 = 8,988.84/x
  3. Step 3: Cross multiply
    15,357.87x = 21,193.65 × 8,988.84
  4. Step 4: Simplify right side
    15,357.87x = 190,506,328.87
  5. Step 5: Solve for x
    x = 190,506,328.87/15,357.87
  6. Step 6: Final answer
    x = 12,404.48

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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.