Home / 28,316.16-39,077.30-15,570.31

Finding the Fourth Proportional to 28,316.16, 39,077.30 and 15,570.31

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Solution

The fourth proportional to 28,316.16, 39,077.30 and 15,570.31 is: 21,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.16 : 39,077.30 = 15,570.31 : x
  2. Step 2: Convert to fraction form
    28,316.16/39,077.30 = 15,570.31/x
  3. Step 3: Cross multiply
    28,316.16x = 39,077.30 × 15,570.31
  4. Step 4: Simplify right side
    28,316.16x = 608,445,538.34
  5. Step 5: Solve for x
    x = 608,445,538.34/28,316.16
  6. Step 6: Final answer
    x = 21,487.58

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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.