Home / 16,870.20-23,280.28-9,316.40

Finding the Fourth Proportional to 16,870.20, 23,280.28 and 9,316.40

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Solution

The fourth proportional to 16,870.20, 23,280.28 and 9,316.40 is: 12,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,870.20 : 23,280.28 = 9,316.40 : x
  2. Step 2: Convert to fraction form
    16,870.20/23,280.28 = 9,316.40/x
  3. Step 3: Cross multiply
    16,870.20x = 23,280.28 × 9,316.40
  4. Step 4: Simplify right side
    16,870.20x = 216,888,400.59
  5. Step 5: Solve for x
    x = 216,888,400.59/16,870.20
  6. Step 6: Final answer
    x = 12,856.30

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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.