Home / 15,812.69-21,803.74-10,779.86

Finding the Fourth Proportional to 15,812.69, 21,803.74 and 10,779.86

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Solution

The fourth proportional to 15,812.69, 21,803.74 and 10,779.86 is: 14,864.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.69 : 21,803.74 = 10,779.86 : x
  2. Step 2: Convert to fraction form
    15,812.69/21,803.74 = 10,779.86/x
  3. Step 3: Cross multiply
    15,812.69x = 21,803.74 × 10,779.86
  4. Step 4: Simplify right side
    15,812.69x = 235,041,264.68
  5. Step 5: Solve for x
    x = 235,041,264.68/15,812.69
  6. Step 6: Final answer
    x = 14,864.09

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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.