Home / 15,377.18-21,210.74-9,702.02

Finding the Fourth Proportional to 15,377.18, 21,210.74 and 9,702.02

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Solution

The fourth proportional to 15,377.18, 21,210.74 and 9,702.02 is: 13,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.18 : 21,210.74 = 9,702.02 : x
  2. Step 2: Convert to fraction form
    15,377.18/21,210.74 = 9,702.02/x
  3. Step 3: Cross multiply
    15,377.18x = 21,210.74 × 9,702.02
  4. Step 4: Simplify right side
    15,377.18x = 205,786,869.13
  5. Step 5: Solve for x
    x = 205,786,869.13/15,377.18
  6. Step 6: Final answer
    x = 13,382.62

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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.