Home / 28,075.80-42,095.70-13,265.40

Finding the Fourth Proportional to 28,075.80, 42,095.70 and 13,265.40

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Solution

The fourth proportional to 28,075.80, 42,095.70 and 13,265.40 is: 19,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.80 : 42,095.70 = 13,265.40 : x
  2. Step 2: Convert to fraction form
    28,075.80/42,095.70 = 13,265.40/x
  3. Step 3: Cross multiply
    28,075.80x = 42,095.70 × 13,265.40
  4. Step 4: Simplify right side
    28,075.80x = 558,416,298.78
  5. Step 5: Solve for x
    x = 558,416,298.78/28,075.80
  6. Step 6: Final answer
    x = 19,889.60

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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.