Home / 15,988.16-22,065.60-9,702.40

Finding the Fourth Proportional to 15,988.16, 22,065.60 and 9,702.40

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Solution

The fourth proportional to 15,988.16, 22,065.60 and 9,702.40 is: 13,390.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.16 : 22,065.60 = 9,702.40 : x
  2. Step 2: Convert to fraction form
    15,988.16/22,065.60 = 9,702.40/x
  3. Step 3: Cross multiply
    15,988.16x = 22,065.60 × 9,702.40
  4. Step 4: Simplify right side
    15,988.16x = 214,089,277.44
  5. Step 5: Solve for x
    x = 214,089,277.44/15,988.16
  6. Step 6: Final answer
    x = 13,390.49

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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.