Home / 18,717.10-28,075.65-8,875.60

Finding the Fourth Proportional to 18,717.10, 28,075.65 and 8,875.60

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Solution

The fourth proportional to 18,717.10, 28,075.65 and 8,875.60 is: 13,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.10 : 28,075.65 = 8,875.60 : x
  2. Step 2: Convert to fraction form
    18,717.10/28,075.65 = 8,875.60/x
  3. Step 3: Cross multiply
    18,717.10x = 28,075.65 × 8,875.60
  4. Step 4: Simplify right side
    18,717.10x = 249,188,239.14
  5. Step 5: Solve for x
    x = 249,188,239.14/18,717.10
  6. Step 6: Final answer
    x = 13,313.40

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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.