Home / 15,515.13-21,385.99-10,477.74

Finding the Fourth Proportional to 15,515.13, 21,385.99 and 10,477.74

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Solution

The fourth proportional to 15,515.13, 21,385.99 and 10,477.74 is: 14,442.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.13 : 21,385.99 = 10,477.74 : x
  2. Step 2: Convert to fraction form
    15,515.13/21,385.99 = 10,477.74/x
  3. Step 3: Cross multiply
    15,515.13x = 21,385.99 × 10,477.74
  4. Step 4: Simplify right side
    15,515.13x = 224,076,842.86
  5. Step 5: Solve for x
    x = 224,076,842.86/15,515.13
  6. Step 6: Final answer
    x = 14,442.47

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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.