Home / 28,316.48-39,075.90-15,569.64

Finding the Fourth Proportional to 28,316.48, 39,075.90 and 15,569.64

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Solution

The fourth proportional to 28,316.48, 39,075.90 and 15,569.64 is: 21,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.48 : 39,075.90 = 15,569.64 : x
  2. Step 2: Convert to fraction form
    28,316.48/39,075.90 = 15,569.64/x
  3. Step 3: Cross multiply
    28,316.48x = 39,075.90 × 15,569.64
  4. Step 4: Simplify right side
    28,316.48x = 608,397,900.60
  5. Step 5: Solve for x
    x = 608,397,900.60/28,316.48
  6. Step 6: Final answer
    x = 21,485.65

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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.