Home / 10,257.60-15,386.40-9,901.20

Finding the Fourth Proportional to 10,257.60, 15,386.40 and 9,901.20

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Solution

The fourth proportional to 10,257.60, 15,386.40 and 9,901.20 is: 14,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.60 : 15,386.40 = 9,901.20 : x
  2. Step 2: Convert to fraction form
    10,257.60/15,386.40 = 9,901.20/x
  3. Step 3: Cross multiply
    10,257.60x = 15,386.40 × 9,901.20
  4. Step 4: Simplify right side
    10,257.60x = 152,343,823.68
  5. Step 5: Solve for x
    x = 152,343,823.68/10,257.60
  6. Step 6: Final answer
    x = 14,851.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.