Home / 28,445.04-39,256.38-15,871.68

Finding the Fourth Proportional to 28,445.04, 39,256.38 and 15,871.68

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Solution

The fourth proportional to 28,445.04, 39,256.38 and 15,871.68 is: 21,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.04 : 39,256.38 = 15,871.68 : x
  2. Step 2: Convert to fraction form
    28,445.04/39,256.38 = 15,871.68/x
  3. Step 3: Cross multiply
    28,445.04x = 39,256.38 × 15,871.68
  4. Step 4: Simplify right side
    28,445.04x = 623,064,701.32
  5. Step 5: Solve for x
    x = 623,064,701.32/28,445.04
  6. Step 6: Final answer
    x = 21,904.16

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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.