Home / 28,316.08-39,075.24-15,740.56

Finding the Fourth Proportional to 28,316.08, 39,075.24 and 15,740.56

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Solution

The fourth proportional to 28,316.08, 39,075.24 and 15,740.56 is: 21,721.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.08 : 39,075.24 = 15,740.56 : x
  2. Step 2: Convert to fraction form
    28,316.08/39,075.24 = 15,740.56/x
  3. Step 3: Cross multiply
    28,316.08x = 39,075.24 × 15,740.56
  4. Step 4: Simplify right side
    28,316.08x = 615,066,159.73
  5. Step 5: Solve for x
    x = 615,066,159.73/28,316.08
  6. Step 6: Final answer
    x = 21,721.44

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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.