Home / 10,345.60-15,518.40-9,341.20

Finding the Fourth Proportional to 10,345.60, 15,518.40 and 9,341.20

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Solution

The fourth proportional to 10,345.60, 15,518.40 and 9,341.20 is: 14,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.60 : 15,518.40 = 9,341.20 : x
  2. Step 2: Convert to fraction form
    10,345.60/15,518.40 = 9,341.20/x
  3. Step 3: Cross multiply
    10,345.60x = 15,518.40 × 9,341.20
  4. Step 4: Simplify right side
    10,345.60x = 144,960,478.08
  5. Step 5: Solve for x
    x = 144,960,478.08/10,345.60
  6. Step 6: Final answer
    x = 14,011.80

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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.