Home / 28,011.47-38,655.99-15,436.22

Finding the Fourth Proportional to 28,011.47, 38,655.99 and 15,436.22

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Solution

The fourth proportional to 28,011.47, 38,655.99 and 15,436.22 is: 21,302.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.47 : 38,655.99 = 15,436.22 : x
  2. Step 2: Convert to fraction form
    28,011.47/38,655.99 = 15,436.22/x
  3. Step 3: Cross multiply
    28,011.47x = 38,655.99 × 15,436.22
  4. Step 4: Simplify right side
    28,011.47x = 596,702,172.68
  5. Step 5: Solve for x
    x = 596,702,172.68/28,011.47
  6. Step 6: Final answer
    x = 21,302.07

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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.