Home / 15,210.83-21,000.58-10,438.76

Finding the Fourth Proportional to 15,210.83, 21,000.58 and 10,438.76

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Solution

The fourth proportional to 15,210.83, 21,000.58 and 10,438.76 is: 14,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.83 : 21,000.58 = 10,438.76 : x
  2. Step 2: Convert to fraction form
    15,210.83/21,000.58 = 10,438.76/x
  3. Step 3: Cross multiply
    15,210.83x = 21,000.58 × 10,438.76
  4. Step 4: Simplify right side
    15,210.83x = 219,220,040.89
  5. Step 5: Solve for x
    x = 219,220,040.89/15,210.83
  6. Step 6: Final answer
    x = 14,412.10

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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.