Home / 28,746.68-39,659.40-21,210.96

Finding the Fourth Proportional to 28,746.68, 39,659.40 and 21,210.96

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Solution

The fourth proportional to 28,746.68, 39,659.40 and 21,210.96 is: 29,262.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.68 : 39,659.40 = 21,210.96 : x
  2. Step 2: Convert to fraction form
    28,746.68/39,659.40 = 21,210.96/x
  3. Step 3: Cross multiply
    28,746.68x = 39,659.40 × 21,210.96
  4. Step 4: Simplify right side
    28,746.68x = 841,213,947.02
  5. Step 5: Solve for x
    x = 841,213,947.02/28,746.68
  6. Step 6: Final answer
    x = 29,262.99

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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.