Home / 15,417.02-21,275.43-8,702.57

Finding the Fourth Proportional to 15,417.02, 21,275.43 and 8,702.57

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Solution

The fourth proportional to 15,417.02, 21,275.43 and 8,702.57 is: 12,009.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.02 : 21,275.43 = 8,702.57 : x
  2. Step 2: Convert to fraction form
    15,417.02/21,275.43 = 8,702.57/x
  3. Step 3: Cross multiply
    15,417.02x = 21,275.43 × 8,702.57
  4. Step 4: Simplify right side
    15,417.02x = 185,150,939.41
  5. Step 5: Solve for x
    x = 185,150,939.41/15,417.02
  6. Step 6: Final answer
    x = 12,009.51

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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.