Home / 28,406.08-42,616.80-10,875.20

Finding the Fourth Proportional to 28,406.08, 42,616.80 and 10,875.20

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Solution

The fourth proportional to 28,406.08, 42,616.80 and 10,875.20 is: 16,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.08 : 42,616.80 = 10,875.20 : x
  2. Step 2: Convert to fraction form
    28,406.08/42,616.80 = 10,875.20/x
  3. Step 3: Cross multiply
    28,406.08x = 42,616.80 × 10,875.20
  4. Step 4: Simplify right side
    28,406.08x = 463,466,223.36
  5. Step 5: Solve for x
    x = 463,466,223.36/28,406.08
  6. Step 6: Final answer
    x = 16,315.74

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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.