Home / 15,509.02-21,402.23-8,435.28

Finding the Fourth Proportional to 15,509.02, 21,402.23 and 8,435.28

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Solution

The fourth proportional to 15,509.02, 21,402.23 and 8,435.28 is: 11,640.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.02 : 21,402.23 = 8,435.28 : x
  2. Step 2: Convert to fraction form
    15,509.02/21,402.23 = 8,435.28/x
  3. Step 3: Cross multiply
    15,509.02x = 21,402.23 × 8,435.28
  4. Step 4: Simplify right side
    15,509.02x = 180,533,802.67
  5. Step 5: Solve for x
    x = 180,533,802.67/15,509.02
  6. Step 6: Final answer
    x = 11,640.57

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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.