Home / 28,543.60-42,815.40-10,075.60

Finding the Fourth Proportional to 28,543.60, 42,815.40 and 10,075.60

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Solution

The fourth proportional to 28,543.60, 42,815.40 and 10,075.60 is: 15,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.60 : 42,815.40 = 10,075.60 : x
  2. Step 2: Convert to fraction form
    28,543.60/42,815.40 = 10,075.60/x
  3. Step 3: Cross multiply
    28,543.60x = 42,815.40 × 10,075.60
  4. Step 4: Simplify right side
    28,543.60x = 431,390,844.24
  5. Step 5: Solve for x
    x = 431,390,844.24/28,543.60
  6. Step 6: Final answer
    x = 15,113.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.